Monday, April 20, 2015

BOTANY GRAND TEST ON FIRST YEAR SYLLABUS -2

BOTANY
1.      Herbarium sheets label provides information about
         
1) vegetative and floral characters of the plant
          2) Habitat and distribution of the plant
          3) Date and place of collection, common names etc. Of the plant
          4) all preserved plant specimens
2.      Identify the correct ascending sequence of taxonomic categories
1) Species→phylum→order→kingdom
2) Genus→species →order →kingdom
3) Species→Genus→order→class
4) Division→Family→order→Genus
3.      Match Column-I with column-II and select the correct option from codes given below
 Column-I                                                            Column-II
 A) Family                                                             i) tuberosum
 B) Kingdom                                                         ii) Polemoniales
 C) Order                                                              iii) Solanum
 D) Species                                                            iv) Plantae
 E) Genus                                                             v) Solanaceae
 1) A-v, B-iv, C-ii, D-i, E-iii                                    2) A-v, B-iv, C-i, D-iii, E-ii
3) A-i, B-ii, C-iii, D-v, E-iv                                     4) A-ii, B-i, C-iii, D-iv, E-v
4.      Ratio of kingdom with prokaryotes and eukaryotes in Whittaker’s classification
1) 1:4                             2) 2:3                             3) 3:2                    4) 4:1
5.      Assertion(A): Bacteria may be aerobic or anaerobic
Reason(R): Anaerobic bacterial cells do not have mitochondria where aerobic bacteria posses mitochondria.
1) Both A and R are correct and R is the correct explanation of A
2) Both A and R are correct but R is not the correct explanation of A
3) A is true and R is false                  4) R is true but A is false
6.      Assertion(A): Nutritional diversity is observed in monerans
Reason(R): Monerans are photo autorophs, photoheterophs chemoautotrophs and chemoheterotrophs.
1) Both A and R are correct and R is the correct explanation of A
2) Both A and R are correct but R is not the correct explanation of A
3) A is true and R is false                  4) R is true but A is false
7.      Landmark achievements during 17th century in the field of biology are
A) Discovery of cell (R-Hooke)
B) Study of bacterial cell(Leeuwenhoek)
C) Anatomical study of tissue (Grew & Malphighi)
D) Discovery of sexual reproduction
1) All except C                2) All except D                3) All except C      4) All the above
8.      Genera used as biofertilizers are
A) Azolla                                                     B) Nostoc
C) Anabaena                                               D) Rhizobium
E) Spirulina                                                F) Chlorella
1) A, B, & C                    2) A, B, C, D                   3) B, C, D, E         4) C, D, E, F
9.      The major pigments of rhodophyceae are
1) Chlorophylls a, d, and phycoerythrin
2) Chlorophylls a, c and phycoerythrin
3) Chlorophylls a, b and Fucoxanthin
4) Chlorophylls a, c and Fucoxanthin
10.    The reduced male gametophyte in gymnosperms and angiosperms is called
1) Stamen                      2) Pollen grain                3) Endosperm       4) Ovule
11.    Assertion(A): The zoospores in Phaeophyceae are pear shaped and have two unequal laterally attached flagella
Reason(R): The gametes in Phaeophyceae are pyriform and bear two laterally attached flagella
1) Both A and R are correct and R is the correct explanation of A
2) Both A and R are correct but R is not the correct explanation of A
3) A is true and R is false                  4) R is true but A is false
12.    Underground stems of the following spread to new niches and form new plants when the older parts die
1) Strawberry                 2) Grasses                      3) Agave                4) 1 & 2
13.    Match the following
 List-I                                                          List-II
 A) Hesperidium                                          I) Pappus
 B) Pome endocarp                                      II) Seed coat and fruit wall fused
 C) Caryopsis                                              III) Epicarp with volatile oil glands
 D) Cypsela                                                 IV) Cartilagenous
          A       B       C       D                               A       B       C       D
 1)      IV      II        I         III                   2)       III       IV      I         II
 3)      III       I         II        IV                  4)       III       IV      II        I
14.    Study the following
List-I                              List-II                                      List-III
I) Ficus                          Pillar roots                              Inflorescence with three
                                                                                      type of flowers                                                    
II) Euphorbia                 Photsynthetic stem                Tricarpellary gynoecium
III) Jasmine                   Stolons                                    Inflrorescence with 3
                                                                                      flowers
IV) Pineapple                Leafy bracts                            Compound fruit
correction combination
1) I, II only            2) I, III, IV only               3) I, II, IV only       4) I, II, III, IV

15.    Assertion(A): Coconut is drupe fruit
Reason(R): Pericarp is hard and stony in coconut
1) Both A and R are correct and R is the correct explanation of A
2) Both A and R are correct but R is not the correct explanation of A
3) A is true and R is false                  4) R is true but A is false
16.    Match the following lists
 List-I                                                          List-II
 A) Alstonia                                                 I) Roots at lower nodes of the stem
 B) Ananas sativus                                      II) Leaflets are attached at a common
                                                                      point in the leaf
 C) Sugar cane                                            III) Swollen placenta
 D) Bombax ceiba                                        IV) More than two leaves at every mode
                                                                   V) Underground lateral branches
                                                                      producing aerial leafy shoots  
 The correct match is
          A       B       C       D                                             A       B       C       D
 1)      V       III       I         II                                    2)       V       III       II        IV
 3)      IV      II        V       I                                     4)       IV      V       I         II
17.    Which of the following statements is incorrect regarding the process of external and internal fertilization?
1) Male and female gametes fuse inside the female body during internal fertilization
2) Male and female gametes fuse outside the female body during external fertilization
3) In internal fertilization, the number of eggs produced by female is more
4) In external fertilization, the number of eggs produced by female is more
18.    Off spring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because
1) Sexual reproduction is a lengthy process
2) Gametes of parents have qualitatively different genetic composition
3) Genetic material comes from parents of two different species
4) Greater amount of DNA is involved in sexual reproduction
19.    Assertion(A): Parthenogenesis means reproduction of embryo directly from an antipodal cell
Reason(R):  Antipodals are haploid structures occuring in a normally in polygonum type of embryosac
1) Both A and R are correct and R is the correct explanation of A
2) Both A and R are correct but R is not the correct explanation of A
3) A is true and R is false                  4) R is true but A is false
20.     Asexual  reproduction by budding is seen in
                                 

1) Bacteria                2)Yeast                3)Hydra                    4) 2 & 3
21.    Which of the following statements is/are true regarding reproduction in flowering plants
A) Central cell with two polar nuclei is diploid
B) Fusion of egg with male gamete is called apogamy
C) Synergids are haploid
D) The point at which funicle touches the ovule is raphe
1) A and D only              2) A and B only              3) B and D only    4) C only
22.    In a Datura flower, each locule has 20 ovules. Out of which 10% of the ovules became abortive. How many minimum number of meiotic divisions are needed for the development of remaining fertile ovules into seeds.(Datura ovary has four locules)
1) 80                              2) 90                              3) 100                   4) 120
23.    Assertion(A): Megaspore mother cell produces four megaspores by undergoing mitosis
Reason(R): Megaspore  mother cells are diploid megaspores are haploid 
1) Both A and R are correct and R is the correct explanation of A
2) Both A and R are correct but R is not the correct explanation of A
3) A is true and R is false                  4) R is true but A is false
24.    Floral formula of a flower is represented as %,, A(10) . The correct description of these symbols is
1) Actinomorphic, bisexual,10 free stamens, unilocular inferior ovary
2) Zygomorphic, unisexual, 10 fused stamens, monocarpellary inferior ovary
3) Zygomorphic, bisexual, 10 fused stamens, monocarpellary superior ovary
4) Actinomorphic, unisexual, 10  free stamens, uniovulate superior ovary
25.    Tomato, Kamanchi, Brinjal, Black gram, Garden pea, Wild pea, Potato, Onion, Garlie & Green gram These plants belongs to how many types of genera?
1) 5                                2) 6                                3) 7                       4) 8
26.    Which of the following characters of flowers cannot be represented in floral formula?
A) Sexuality of the flower
B) Symmetry of the flower
C) Number of floral organs in a whorl
D) Number of locules in the ovary
E) Cohesion of sepals
F) Type of aestivation

1) A, B, C                       2) D and F                      3) D alone             4) A, C, E & F
27.    Match the following with reference to Bentham and Hooker system
List-I
                                                          List-II
 A) Thalamiflorae                                         i) No cohorts
 B) Bicarpellatae                                          ii) 6 cohorts
 C) Heteromerae                                          iii) 4 cohorts
 D) Monochlamydae                                    iv) 3 cohorts
                    A       B       C       D                                    A       B       C       D
 1)      i         ii        iii       iv                          2)       ii        iii       i         iv
 3)      ii        iii       iv       i                            4)       iv       iii       ii        i          
28.    Identify the correct statements
1) The central part of the centriole is called axoneme
2) The outer nuclear membrane usually bears Golgivesicles
3) In the ultrastructure of a cilium /flagellum the peripheral doublets are also inter connected by linkers
4) The major components of cytoskeleton include microfilaments intermediate filaments microtubules and sphaerosomes
29.    Number of types of histone proteins observed in an eukaryotic chromatin fibre with 100 nucleosomes is
1) 500                                      2) 800                            3) 900                   4) 5
30.    Which of the following statements are correct with reference to cell membrane?
A) Hydrophilic heads of lipids are towards outside and hydrophobic tails are towards the inner part
B) Quasi fluid nature of lipids enables lateral movement of proteins with in the bilayer
C) Neutral solutes can move across the membrane by simple diffusion along concentration gradient
1) A & B                         2) A & C                         3) B & C               4) A, B, C
31.    Study the following
List-I                              List-II                                      List-III
I) Cell wall                      Non-living rigid covering       Common for all living
                                                                                      cells
II) Algal cellwall             Cellulose, Galactans,              Protects from
                                      Mannans CaCO3                      Mech.damage
III) Plant cellwall           Cellulose, hemicelluloses       Permeable
IV) Bacterail cellwall     Part of cell envelope               Covered by Glycocalyx an
                                                                                      outerside
correction combination
1) II, III, IV only              2) I & II only         3) I, II, III only       4) II, III, IV only

32.    If ‘R’ group of the  amino acid is represented by 'H' the amino acid is
          1) Alanine                2) Glycine            3) Tyrosine           4) Phenylalnine
33.    Find the number of hydrogen bonds and phosphodiester bonds present between the nucleotides, which are present in the DNA having 119A0 units length and 18 Thymine bases in it
1) 70, 70                        2) 70, 69                        3) 87, 68               4) 87, 70
34.    Assertion(A):  The aminoacids which posses both +ve and –ve charges to their R groups are Zwitterionic forms
Reason(R): The particular property of a particular amino acid depends on the ionizable nature of amino group and carboxyl group
1) Both A and R are correct and R is the correct explanation of A
2) Both A and R are correct but R is not the correct explanation of A
3) A is true and R is false                  4) R is true but A is false
35.    Find out the correct statements(s) from the following
I) In animals mitotic cell division is seen in the diploid somatic cells
II) Karyokinesis begins with prophase and ends with telophase
III) The number of nuclei that are divided in meiosis is three
IV) In higher plants, single bipolar spindle apparatus is formed during mitosis

1) I, II & IV                      2) I, III & IV only             3) II only               4) I, II, III & IV
36.    Assertion(A):  Companion cells control the sieve tube activities
Reason(R): Companion cells possess nucleus
1) Both A and R are correct and R is the correct explanation of A
2) Both A and R are correct but R is not the correct explanation of A
3) A is true and R is false                  4) R is true but A is false
37.    Select the true statement
1) Primary meristems  do not involve in secondary growth
2) Secondary meristems  do not involve in primary growth
3) Secondary meristems  are derived from primary meristems
4) Primary meristems  are formed by differentiation
38.    Match the following
 List-I                                                          List-II
 A) Dicot root                                               i) Pericycle absent
 B) Dicot stem                                             ii) Polyarch condition
 C) Monocot root                                         iii) Pith well developed
 D)Monocot stem                                         iv) Pith poorly developed
          A       B       C       D                                    A       B       C       D
 1)      i         ii        iii       iv                          2)       iv       iii       ii       i
 3)      iv       iii       i         ii                           4)       i         ii        iv       iii
39.    To produce 1 gm dry organic matter the amount of CO2, fixed is
1) 16.3 g                         2) 16.30 g                       3) 1.63g                4) 16.2g
40.    Assertion(A):  Secondary succession in a burnt forest is faster than primary succession
Reason(R): Some soil or sediments are already present
1) Both A and R are correct and R is the correct explanation of A
2) Both A and R are correct but R is not the correct explanation of A
3) A is true and R is false                  4) R is true but A is false

BOTANY KEY
1)       3
2)       3
3)       1
4)       1
5)       3
6)       1
7)       4
8)       2
9)       1
10)    2
11)    2
12)    4
13)    4
14)    4
15)    3
16)    4
17)    3
18)    2
19)    4
20)    4
21)    4
22)    2
23)    4
24)    3
25)    1
26)    2
27)    3
28)    3
29)    4
30)    4
31)    1
32)    2
33)    3
34)    4
35)    4
36)    1
37)    2
38)    2
39)    3
40)    1


BOTANY GRAND TEST ON FIRST YEAR SYLLABUS

1.     Assertion (A) : The higher the taxonomic category lesser will be the number of common characters of organisms belonging to that category.
         Reason    (R) : melangena, tuberosum and nigrum   belonging to the genus Solanum have many common characteristics but differ widely from mango, bean, mustard
        and china-rose although all of them belong to the class  dicotyledonae.
         1)  A and R are true and R is the correct explanation of A.
         2)  A and R are true and R is not the correct explanation of A.
         3)  A is true, R is false.                                                4)  A is false, R is true.
2.     Identify the correct statements
     I. Genus is a group of species which are related and have less characters in common as compared    to species
     II. Family is a group of related genera with still less number of similarities as compared to genus and species
     III. Genus is a group of related species which has more characters in common in comparison to species of other genera
     IV. Family is a group of related genera that are more similar to each other than with genera of other families.
           1) II & III only           2) I & IV only               3) II, III, & IV only             4) I, II, III & IV
3.        Study the following lists
                  List – I                  List – II
         A.     Flora                     I. Provide information for identification of names of
                                                   species found in an area
         B.     Manuals                II. Collection of preserved plant and animal specimens
         C.     Monographs        III. Information on any one taxon
         D.     Key                        IV. Taxonomic aid used for identification of
                                                        plants and animals based on similarities and
                                                        dissimilarities
                                                 V. Actual account of habitat and distribution of
                                                      plants of a given area 
         The correct match is
                     A              B               C               D                                A               B              C              D
           1)      II              I                III             V                   2)           V               I                III            II
           3)      III            V               I                IV                 4)           V               I                III           IV 
4.        Which of the following is incorrect with respect to criteria/marker used by Carl 
Woese for studying evolutionary relationships among living organisms ?
           1) 16s rRNA               2) 23s rRNA                 3) 18s r RNA                      4) 2 & 3

5.        Study the following and choose the answer which corresponds, in the five kingdom classification order, to the terms  / description below:
           A) Silicified cell walls; spores with true walls
           B) Pseudomurein in cells walls ; mycolic acid in cell walls
           C) Algin in cell walls ; carrageen in cell walls
           D) White spots on mustard; Red rot pathogen
           E) Heterotrophic, eukaryotic organisms and cells without cell walls
           1) A : Diatoms ; Slime moulds  B : Archaebacteria ; Actinomycetes C : Brown algae ; Red algae D : Albugo ; Colletotrichum  E : Animalia
           2) B : Archaebacteria ; Actinomycetes  A : Diatoms ; Slime moulds  D : Albugo ; Colletotrichum  C : Brown algae ; Red algae  E : Animalia         
           3) B : Archaebacteria ; Actinomycetes  A : Diatoms ; Slime moulds  C : Brown algae ; Red algae D : Albugo ; Colletotrichum  E : Animalia
           4) A : Diatoms ; Slime moulds  B : Archaebacteria ; Actinomycetes  D : Albugo ; Colletotrichum  C : Brown algae ; Red algae  E : Animalia
6.        Identify the wrong combination
           1) Single cell proteins    -----     Spirulina, Chlorella
           2) Petro – plants           -----     Jatropa, Pongamia
           3) Biofertilizers            -----    Cyanobacteria like Oscillatoria , Nostoc , Azolla, Anabaena
           4) Medicinal plants      -----    Solanaceae members like Atropa, thorn apple, Aswagandha
7.        Four plants A, B, C, D selected from Algae, Bryophytes, Pteridophytes and Gymnoperms, respectively, are observed. ‘A’ has heterogametes exhibiting diplontic life cycle. ‘B’ has attached sporophyte with elaters and exhibiting haplo – diplontic life cycle. In ‘C’ leaflets show furcate venation and exhibiting diplo – haplontic life cycle ‘D’ has micro and megasporophylls on the same tree and obligate association with mycorrhizae exhibiting diplo – haplontic life cycle. A, B, C & D plants, respectively, are
           1) Fucus, Marchantia, Dryopteris, Cycas           2) Volvox, Marchantia , Dryopteris, Pinus
           3) Polysiphonia, Anthoceros, Pteris, Cycas        4) Fucus, Marchantia, Dryopteris, Pinus
8.        Indentify the wrong combination
           1) Volvox        –  Chlorophyll a, b – Exhibits oogamy
           2) Laminaria   –  Fucoxanthin       – Used to extract iodine
           3) Sphagnum   –  Dioecious           – Used as packing material for trans – shipment of living material
           4) Selaginella  –  Lycopsida           – Leaves are microphylls
9.        Match the following taxa with respect to their female sex organ / gametangium :
                  Taxon                                                      Female sex organ / gametangium
         A.     Brassica                                                  I. Archegonium                              
         B.     Chara                                                       II. Pistil
         C.     Cycas                                                       III. Spermatium
         D.     Polysiphonia                                           IV. Oogonium
                                                                                    V. Carpogonium
         The correct answer is                                                                                                       
                     A              B               C               D                                  A               B              C               D
           1)      II              IV             I                III                   2)           I                 IV             II              V
           3)      II              IV             I                V                     4)           II               V              IV             I    
10.      A taxon is observed, which is a hybrid variety had twice the amount of aminoacids, lysine and tryptophan. In this taxon bunch of silky hairs of inflorescence wave in the wind to trap pollengrains. Which of the following characters are related to the taxon ?
           A) Caryopsis fruit                                          B) Brace roots
           C) Monoecious nature                                   D) Persistent endosperm in mature seed
           E) Conjoint and closed vascular bundles of similar size in both stem and leaves
           1) A, B & C only        2) A, B, C & E only     3) A, B, C & D only           4) A, B, C, D & E
11.      Unisexual, naked flowers are arranged in cymose manner inside cup like involucre of bracts are found in
           1) Verticellaster of  Leucas                            2) Hypanthodium of Ficus
           3) Cyathium of Euphorbia                             4) Compound umbel of carrot
12.      Study the following lists :
                  List - I                                                      List - II
         A.     Tendrils of grapevine                          I. Axillary buds                              
         B.     Bulbils of Agave                                    II. Vegetative buds
         C.     Tendrils of cucumber                           III. Terminal buds
         D.     Bulbils of Dioscorea                             IV. Floral buds
                                                                                    V. Epiphyllous buds
         The correct answer is                                                                                                       
                     A              B               C               D                                   A               B              C               D
           1)      I               III              II               IV                   2)          II                IV             V              III
           3)      III             IV              I                II                     4)          IV              V              II               III
13.      Find the incorrect combination
           1) Epiphyllous stamens ----  Lilium              2) Polyandrous condition  ---- China rose
           3) Diadelphous stamens ---- pea                   4) Polyadelphous stamens --- Citrus
14.      Four plants (A, B, C, D ) are observed. ‘A’ has nut fruit with stony pericarp and the cotyledons, fleshy pedicel are chief edible parts. In ‘B’ each carpel of apocarpous gynoecium develops into a fruitlet and its mesocarp, endocarp are the chief edible parts, ‘C’ has sorosis fruit and inflorescence axis, juicy succulent bracts as chief edible parts. ‘D’ has drupe fruit and endosperm in the fruit as the chief edible part. To which families A, B, C and D belong respectively ?
           1) Anacardiaceae, Annonaceae, Moraceae, Palmae
           2) Anacardiaceae, Annonaceae, Bromeliaceae, Arecaceae
           3) Anacardiaceae, Rosaceae, Bromeliaceae, Palmae
           4) Solanaceae, Cucurbitaceae, Bromeliaceae, Arecaceae
15.      Indentify the characters of Tridax, Acacia, Argemone and Bougainvillea respectively.
           1) Inferior ovary, schizocarp splits into mericarps, free central placentation, cymule
           2) Cypsela fruit, phyllodes, parietal placentation, stem tendrils
           3) Cypsela with pappus, schizocarp splits into one seeded mericarps, parietal placentation,  
               cymule
           4) Basal placentation, phyllodes, parietal placentation, leaf spines


16.      Identify the correct sequence of plants in the order of characters given below :
           a) Ovules born along the ventral suture of unilocular ovary
           b) Ovules are born on central axis without septa
           c) Ovules develop on inner walls of the ovary which is one – chambered but it becomes two – chambered due to false septum
           1) Dolichos, Solanum, Argemone                  2) Dolichos, Dianthus, Brassica
           3) Pisum, Hibiscus, Brassica                          4) Pisum, Tridax, Mustard
17.      Which one of the following is correctly matched ?
           1) Yeast – Zoospores                                       2) Onion – bulb
           3) Zinger – Sucker                                           4) Chlamydomonas – conidia
18.   Assertion (A) :  In some plants such as mangroves, the seeds germinate while still attached to the mother plant.
         Reason    (R) : Rhizophora is a sciophyte and shows vivipary
         1)  A and R are true and R is the correct explanation of A.
         2)  A and R are true and R is not the correct explanation of A.
         3)  A is true, R is false.                                                4)  A is false, R is true.
19.   Observe the following sets of plants
           Set ‘A’ : Allium, Colchicum, Datura, Gloriosa , Hibiscus, Solanum, Sunflower
           Set ‘B’ : Ananas, Artocarpus, Asparagus, Capsicum, Cotton, Datura, grapes, Guava, Nicotiana, tomato
           Identify the correct ratios between the plants showing herkogamy, protogyny and protandry with respect to set ‘A’ and the plants with sorosis, capsule and berry fruits with respect to set ‘B’
                Set ‘A’                   Set ‘B’
           1)  2 : 3 : 2                  2 : 3 : 5
           2) 1 : 2 : 4                   4 : 3 : 3
           3) 1 : 3 : 3                   2 : 4 : 4
           4) 2 : 4: 1                    3 : 4 : 3
20.      Which one of the following statements is correct ?
           1) The mature seed in wheat is not endospermic    2) Mango is a parthenocarpic fruit
           3) A proteinaceous aleurone layer is present in maize grain
           4) A sterile pistil is called a staminode
21.      Pollen tablets available in the market are meant for :
           I) ‘Invitro’ fertilization                                II) Breeding programmes
           III) Ex-situ conservation                              IV) Food supplements
           1) I, II & III only         2) II & III only              3) II, III & IV only              4) IV only
22.      Dicliny (Monoecious Condition) prevents :
           1) Autogamy but not geitonogamy                2) Both geitonogamy and xenogamy
           3) Geitonogamy but not xenogamy               4) Autogamy and geitonogamy




23.      Identify the wrong pair of statements
           I. The ratio of the number of carpels in the flowers of cucumber and flowers of Smilax
                is 1 : 1
           II. The ratio of number of stamens in the flowers of Datura and Pisum is 1 : 2
           III. In Bentham & Hooker’s system of classification, the ratio between the cohorts of series disciflorae and bicarpellatae is 2 : 3
           IV. The fruits in Tridax and Mangifera have the seeds in the ratio of 2 : 1
           1) III, IV                      2) I, IV                           3) I, II                                   4) II, III
24.      Which one of the following statements is wrong ?
           1) Intine is made up of cellulose and pectin
           2) When pollen is shed at two – celled stage, double fertilization does not take place
           3) Vegetative cell is larger than generative cell in pollengrain
           4) Pollengrains in some plants remain viable for months
25.   Assertion (A) :  Apomictic hybrid seed could potentially provide tremendous benefits to poor farmers  
         Reason    (R) : Through apomixis, the desirable traits can be maintained indefinitely without segregation of characters in hybrid progeny so that the farmers use such apomictic hybrid seed to raise new crop year after year without buying hybrid seeds every year
         1)  A and R are true and R is the correct explanation of A.
         2)  A and R are true and R is not the correct explanation of A.
         3)  A is true, R is false.                                                4)  A is false, R is true.       
26.   A teacher was explaining about a plant whose venation pattern is basically similar to Crotalaria, placentation type in pistillate flowers is similar to bisexual flowers of china rose, number of stamens in staminate flowers is same like that of bisexual flowers of mustard and it is a tendril climber with aerial weak stem . He was trying to arrive at one of the following ?
           1) Brinjal                    2) Glory lily                 3) Sarsaparilla                   4) Onion
27.      In which one of the following, the scientific name, its two characters and its family are not correctly matched, where as the remaining three are correct ?

Scientific name
Two characters
Family
1)
Pisum sativum
a) Tendril climber
b) Papilionaceous corolla
Fabaceae
2)
Solanum nigrum
a) Epipetalous stamens
b) Unilocular ovary
Solanaceae
3)
Allium cepa
a) Umbel inflorescence
b) Protandrous flowers
Liliaceae
4)
Oryza sativa
a) Spike inflorescence
b) Caryopsis fruit
Poaceae




28.      Match the following and select the correct answer
                  List - I                                                      List - II
         A.     Centriole                                                 I. Infoldings in mitochondria      
         B.     Chlorophyll                                            II. Thylakoids of chloroplast
         C.     Cristae                                                     III. Nucleic acid in ribosomes
         D.     Ribozyme                                                IV. Basal body of cilia or flagella
                                                                                    V. Catalytic protein in ribosomes
                     A              B               C               D                                  A               B              C               D
           1)      IV            II               I                V                     2)          I                 II               IV             III
           3)      I               III              II               IV                   4)          IV              II               I                III
29.      Identify the true statement in the following
            1) Each nucleosome consists of a core of five types of nine histone molecules
            2) Catabolism of long chain fatty acids and synthesis of phospholipids occur in peroxisomes
            3) In telocentric chromosome, the centromere is situated close to its end forming one extremely             short and one very long arm.
            4) The Golgi apparatus is an important site for conversion of lipids to carbohydrates
30.      There are 20% adenines among the bases in a DNA fragment measuring 20 kb in length.  What is the ratio between pentoses, nitrogen base pairs, phosphate groups and pyrimidines in this DNA fragment ?
           1) 1 : 2 : 1 : 2              2) 10 : 5 : 10 : 6           3) 10 : 5 : 10 : 3                 4) 2 : 1 : 2 : 1
31.      The non – polymeric biomolecules, synthesized by smooth ER, found in acid insoluble fraction during analysis of chemical composition of a living tissue are
           1) Proteins                  2) Lipids                       3) Polysaccharides            4) Glycogen molecules
32.      Study the following lists
                  List - I                List - II
         A.     Chitin                 I. A polysaccharide composed of only glucose molecules   
         B.     Starch                II. A polysaccharide with only fructose sugar molecules
         C.     Cellulose           III. A polysaccharide with secondary structure capable of
                                                         holding I2 molecules                                                 
         D.     Inulin                 IV. A complex polysaccharide
                                  V. A polysaccharide with alternate glucose and fructose molecules
         The correct match is                                                                                                         
                     A              B               C               D                                  A               B              C               D
           1)      IV            III              I                II                     2)          IV              III             V              I
           3)      IV            II               V               I                      4)          III               IV             V              II
33.      Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres
           1) Anaphase II           2) Metaphase I             3) Metaphase II                  4) Anaphase I
34.      What are the chromosome numbers in the following respectively?
           I. Synergid cell in Apple                                II) Leaf cell in Allium
           III. Primary endosperm nucleus in potato
           IV. Meiocyte of Haplopappus
           1) 34, 16, 72, 4           2) 17, 16, 72, 2             3) 17, 16, 72, 4                   4) 17, 32, 72, 4
35.      Closed vascular bundles in maize stem lack
           1) Pith                         2) Pericycle                  3) 1 & 2                               4) Cambium
36.      Which one of the following characters is not found in the plant showing kranz anatomy in leaves, naturally occurring cytokinin obtained from its kernels and intercalary meristem between mature tissues in stem
           1) Lysigenous cavities in stem                       2) Bulliform cells in adaxial epidermis of leaves
           3) Chromosome number of endospermous cell is 30    4) Pith is absent in the root
37.      Identify the correct pair of statements
           I. In old dicot trees the greater part of secondary xylem is infiltrated with various organic compounds like tannins, resins, oils, gums, aromatic substances and essential oils
           II. Casparian strips are water impermeable, waxy suberised bands deposited on tangential as well as radial walls of the root endodermal cells
           III. Bulliform cells are large, empty and colourless present in adaxial epidermis of dorsiventral leaves of Nerium
           IV. The spring wood is darker in colour and has a higher density where as the antumn wood is lighter in colour and has lower density in secondary dicot stems
           1) III & IV                   2) II & III                       3) I & II                               4) I & IV
38.      Match the following plants of a pond with their respective category
                  List – I (plant pairs )                            List – II (category)
         A.     Hydrilla & Utricularia                         I. Free floating hydrophytes
         B.     Typha & Limnophila                             II. Rooted plants with floating leaves
         C.     Nymphaea & Victoria                           III. Submerged, suspended hydrophytes       
         D.     Lemna & Pistia                                      IV. Submerged, rooted hydrophytes
                                                                                    V. Amphibious plants
         The correct match is                                                                                                         
                     A              B               C               D                                  A               B              C               D
           1)      III             II               V               I                      2)          II                III             IV             I
           3)      III             V               IV             II                     4)          III               V              II               I
39.      Identify the correct pair of combination
           I) Diatoms                  – Pioneer community                      – Auxospores   
           II) Rhizophora           – Halophyte                                       – Vivipary
           III) Lichens                – Weathering of rock                       – Symbiotic association 
                                                                                                                  with mosses
           IV) Cultural services – Flood protection by sundarbans  – Aesthetic value
           1) II and III only         2) I & II only                3) II & IV only                   4) III & IV only
40.      Identify the wrong pair of statements
           I. Many desert plants like Opuntia, cacti have a special photosynthetic pathway (CAM) that enables their stomata to remain opened during day time.
           II. Mesophytes are plants that normally grow in habitats where the pore spaces in soil are occupied almost equally by water and gases
           III. Casuarina is a perennial, non – succulent plant, in that photosynthetic function is taken over by flattened stems
           IV. As an ecological succession proceeds, the number and types of animals and decomposers also change along with vegetational changes

           1) I & III only             2) II & IV only             3) I & II only                      4) II & III only

Asthra