Saturday, March 17, 2012

PLANTS WATER RELATIONS ASSIGNMENT

1 Diffusion is the phenomenon shown by
I. Solids
II. Liquids
III. Gases





Ans:All
2 This is an example for diffusion




Ans:Uptake of CO2 during photosynthesis
3 Match the following with respect to Bryophyta
List – I  List – II

A) Hydroids I) Capsule
B) Protonema II) Rhizoids
C) Spore production III) Cauloid
D) Zooidogamy IV) Young gametophyte
  V) 





Ans:A - III, B - IV, C - I, D - V
4 [A]: Proteins show more imbibition than cellulose
[R]: Protins are soluble in water but not cellulose





Ans:A is true but R is false
5 Imbibition of water is shown by




Ans:Hydrophilic colloids
6 Identify the correct sequence of substances that show gradual increase in Imbibition




Ans:Cotton fibre; Paddy grains; Soybean seeds
7 Modified roots that absorb water by Imbibition are seen in




Ans:Bulbophyllum
8 In Potato osmoscope experiment, the structure of Potato that behaves as selectively permeable membrane is




Ans:Cell membranes of Storage parenchyma of Potato tuber
9 Choose the correct statements with respect to Thistle funnel experiment
I. There is gradual increase in hydrostatic pressure in the Thistle funnel
II. Water of the beaker continuously flows into the thistle funnel as there is no solute in the beaker and there is solute in the thistle funnel.
III. The Y of the solution present in the thistle funnel gradually increases.
IV. The Π of the thistle funnel gradually increases





Ans:I and III
10 A cell in evident plasmolysis state has the following condition




Ans:Y= Π
11 Morphologically similar cells A, B, C and D are kept respectively in solution P having 1% Sucrose solution, Q with 2% sucrose solution, R with 3% sucrose solution and S with 5% sucrose solution. Cell D has shown incipient plasmolysis and the other cells have not shown any signs of Plasmolysis. Choose the correct statements among the following.
I. Cell A is isotonic to solution P
II. Cell B is isotonic to solution Q
III. Cell C is isotonic to solution R
IV. Cell D is hypotonic to solution S





Ans:All except I and II
12 During the plasmolysis of a parenchyma cell there is decrease in the
I. Size of Plant cell
II. Size of protoplast
III. Amount of cytoplasm
IV. Vacuole





Ans:II and IV
13 Plasmolysis phenomenon helps the growing plant




Ans:in withstanding the water stress
14 During the process of Plasmolysis of Plant cell




Ans:The Y of outside solution and solution present between cell wall and Protoplast is same
15 [A]: In thistle funnel experiment, egg membrane behaves as selectively permeable membrane
[R]: Egg membrane allows the diffusion of both water and Sucrose





Ans:A is true but R is false
16 Choose the correct statement




Ans:Complete movement water from trichoblast to xylem of root can be symplastic
17 Water is mainly absorbed by plants by




Ans:Passive, osmotic mechanism
18 `[A]: Plants absorb water by Passive mechanism
[R]: Water of soil solution enters into root hair due to difference in water potential between soil and root hair





Ans:Both A and R are true but R is not the correct explanation of A
19 The components of symplast of plants are
I. Cell wall
II. Plasmodesmata
III. Intercellular spaces
IV. Protoplasts





Ans:II and IV
20 Choose the correct statement




Ans:Water path from endodermis to xylem of root is always symplastic
21 Water of soil enters into cell wall of root epidermal cell by




Ans:Imbibition
22 Arrange the following plants with gradual increase in their height
i) Pseudotsuga menziensii
ii) Eucalyptus amygdalina
iii) Sequoia sempervirence
iv) Eucalyptus regnans





Ans:iii, i, ii, iv
23 [A] : The main driving force for ascent of sap is transpiration.
[R] : Transpiration pull is greater than cohesive force of water.





Ans:A is true but R is false
24 In the experiment to demonstrate ascent of sap by cohesion and tension theory, the sponge can be compared with




Ans:Mesophyll
25 The theory proposed by Dixon explains the following function of plants




Ans:Movement of mineral water through xylem
26 The driving force for ascent of sap is




Ans:difference in Y between the mesophyll cells and xylem of leaf
27 The cohesive force of water is




Ans:30MPa
28 Match the following
Y value  regions
A) -30 I) Soil solution
B) -0.03 II) Root xylem
C) -3.0 III) Atmosphere
D) -0.3 IV) Leaf xylem





Ans:A - III, B - I, C - IV, D - II
29 [A]: Ringing experiments are carried out in Monocots
[R]: Monocots have atactostele in their stems





Ans:A is false but R is true
30 The tallest spermatophyte is




Ans:Eucalyptus regnans
31 During ascent of sap actually the tension is created in




Ans:Cell walls of mesophyll cells
32 The minimum water potential gradient required for ascent of sap in tallest plant of the plant kingdom is




Ans:13 bars
33 [A]: The Y of pure water is zero
[R]: The chemical potential of pure water is greater than the chemical potential of water present in a solution





Ans:Both A and R are true but R is not the correct explanation of A
34 Taylor coined the term




Ans:Water potential
35 If the turgor pressure of a cell increases, there is also increase in
I. Y
II. m
III. p
IV. p
V. T





Ans:I, II, III
36 A, B and C are the cells of a root. Cell A has the P of 3 MPa, Π of – 4.5 MPa and T of -0.5 MPa. Cell B has T as -0.75 MPa, Π of -4.5 Mpa and P of 2.75 MPa. Cell C has P as 6 MPa, T as -1.5 MPa and Π as – 5 MPa. If the movement of water is symplastic, Cells A, B and C are respectively




Ans:Cortical cell, Endodermal cell, Trichoblast
37 Matric potential is due to the presence of




Ans:Water insoluble hydrophilic substances
38 Wall pressure is due to the development of




Ans:Turgor pressure
39 In Potato osmoscope experiment, the structure that behaves as semipermeable membrane is




Ans:Cell membrane of storage parenchyma
40 In a turgid cell, the wall pressure and Turgor pressure are




Ans:Equal in opposite directions
41 Match the following
Plant cell  Y value

A) Trichoblast                     I)- 20 bars
B) Passage cell                   II)- 3 M p a
C) Root pericycle cell           III) -1 M p a
D) Mesophyll cell               IV) - 25 bars
          V) 0 bars





Ans:A - III, B - I, C - IV, D - II

MINERAL NUTRITION ASSIGNMENT

1 This organism never be a symbiont




Ans:Lycopersicon
2 Orobanche is usually parasitic on a plant that belongs to order




Ans:Polemoniales
3 Match the following





Ans:A - V, B - IV, C - I, D - III
4 Choose the correct statement




Ans:All fungi are chemoheterotrophs
5 Match the following





Ans:A - V, B - III, C - IV, D - I
6 Woodward carried out experiments on the plant that has




Ans:Suckers
7 The essential elements that can bind to clay particles in ionic form are




Ans:N, K, Ca, Mg, Fe, Mn, Zn, Cu
8 Match the following





Ans:A - IV, B - III, C - II, D - I
9 [A]: Soil is a complex substance
[R]: It has nutrients formed mainly by weathering





Ans:Both A and R are true but R is not the correct explanation of A
10 The total number of elements distributed in various plants of Plantae is




Ans:70
11 Features of essential elements are
I. Involvement in vegetative or reproductive growth
II. Functions an element can be carried out by some other element
III. Direct involvement in biochemical activities
IV. Should be present in all molecules of the plant





Ans:I and III
12 Match the following





Ans:A - IV, B - I, C - V, D - II
13 [A]: Nickel is an essential element
[R]: It is an integral part of the enzyme Urease





Ans:Both A and R are true and R is the correct explanation of A
14 The ratio between the essential Macro and Micro mineral elements is




Ans:6:7
15 This is not the feature of an essential element




Ans:Inhibiting the activities of enzymes
16 Essentiality of an element is determined by carrying out the following experiments




Ans:Hydroponics
17 [A]: Plant life shall not exist without frame work elements
[R]: Almost all the components of living organisms have C, H, O.





Ans:Both A and R are true and R is the correct explanation of A
18 One of the following frame work elements is absent in one of the following organic compounds.




Ans:Carotene
19 Study the following and choose the correct match





Ans:A - III, B - IV, C - II, D - I
20 Nitrogen containing hormones are
I. IAA
II. ABA
III. GA3
IV. Zeatin





Ans:I and IV
21 Sulphur containing vitamins are




Ans:All
22 [A]: Calcium is an important structural component of cell wall
[R]: It is present in the cell wall of isolated cells





Ans:A is true but R is false
23 Most of the enzymes of Photosynthesis and respiration are activated by




Ans:Mg
24 [A]: Sulphur stabilizes the protein structure.
[R]: In a protein disulphide bonds are formed between Methionine and Alanine





Ans:A is true but R is false
25 Macroelement that mainly helps in maintaining ionic balance is




Ans:K
26 The following element never acts as an activator of enzymes




Ans:P
27 Group of plants that can absorb Phosphate more efficiently from soil than other groups of plants is




Ans:Fungi
28 Match the following





Ans:A - V, B - III, C - II, D - I
29 Study the following table and choose the correct combination





Ans:All except I
30 [A]: None of the plant hormones have sulphur
[R]: Sulphur containing amino acids are not involved in Phytohormone synthesis





Ans:A is true but R is false
31 Identify the set containing microelements




Ans:Mn, Zn, Cu, Fe
32 The following element is not a part of chlorophyll but essential for its synthesis




Ans:Fe
33 The following micro nutrient has a role in IAA synthesis




Ans:Zn
34 The micro elements of Nitrogenase are
I. Mo
II. Fe
III. Cu
IV. Mn





Ans:I and II
35 The enzyme involved in the conversion of NO3- to NO2- has the following essential element.




Ans:Mo
36 One of the following is not a micronutrient




Ans:Ca
37 Cytochrome C oxidase is not an important respiratory enzyme of




Ans:Clostridium
38 Match the following





Ans:A - IV, B - V, C - II, D - I
39 Study the following table and choose the correct combination





Ans:I and III
40 [A]: Most of the microelements are absorbed by plants in anionic form
[R]: Cl, B, Mo are absorbed by plants in anionic form





Ans:A is false but R is true
41 [A]: Cu plays a role in photosynthetic electron transport
[R]: Cu is an integral part of Ferridoxin





Ans:A is true but R is false
42 [A]: Zn is a part of IAA
[R]: Zn is required for auxin synthesis





Ans:A is false but R is true
43 The micro element that plays a key role in ionic balance of protoplasm is




Ans:Cl
44 Ion absorption studies are carried out by
I. de Saussure
II. Epstein III. Hoagland
IV. Stout





Ans:II and III
45 Choose the correct statement




Ans:All ions of soil solution enter passively into apoplast of root cells
46 [A]: Carbon, Hydrogen and Oxygen are not absorbed by roots
[R]: C, H, and O are non-mineral elements





Ans:A is false but R is true
47 During the mediation of H+ ATPase pump for active transport of ions




Ans:H+ are carried by Uniporters, Symporters and Antiporters
48 During the mediation of H+ ATPase pump, Sucrose is absorbed actively through




Ans:Specific symporters
49 Proton binding sites are seen in
I. Uniporters
II. Symporters
III. Antiporters





Ans:I, II, III
50 During the entry of ions into root cells, the following structure of root cell acts as barrier.




Ans:Cell membrane
51 Ions carriers are




Ans:Totally embedded integral proteins
52 This bio-fertilizer has flagellated cells.




Ans:Azospirillum
53 The following are used for inoculating the legume seeds with Rhizobia
I. Gum
II. Carboxymethyl cellulose
III. Humus





Ans:I and II
54 The recommended dose of cyanobacterial use for getting better yields of Paddy is




Ans:10kg/hectare
55 These are used as biofertilizer to increase wheat production
I. Anabaena
II. Azolla
III. Glomus
IV. Azospirillum





Ans:III and IV
56 Choose the correct statement




Ans:Endomycorrhizal fungi are used as Biofertilizers
57 Oat plant is associated with




Ans: Ectomycorrhizal fungi
58 AM fungi increase the absorption of the following essential element.




Ans:P
59 Match the following





Ans:A - IV, B - III, C - II, D - I
60 Study the following table and choose the correct combination




Ans:I and III
61 [A]: Azospirillum coverts N2 into NH3.
[R]: All biofertilizers enrich the soil and plant with Nitrogen





Ans:A is true but R is false
62 Azolla as biofertilizer was first demonstrated in




Ans:Vietnam
63 Match the following





Ans:A - III, B - I, C - V, D - II
64 Algalisation technique is introduced in India by




Ans:Venkataraman
65 In an epidermal cell of root, there were 800 H+, 100 Na+, 30 NO3 and 50 sucrose molecules in the solution present between cell wall and cell membrane. After sometime, due to operation of H+ ATPase pump, the apoplast had showed the presence of 850 H+, 125 Na+, 3 NO3 and 5 sucrose molecules. The net utilization of ATP and the total number of H+recycled back to symplast are respectively are




Ans:147, 97
66 Choose the correct statement with respect to secondary active transport through symporter during the operation of H+ ATPase in the cell membrane of Rhizodermal cell.
I. Before binding of H+ to the symporter, the S binding site is neither exposed towards solution of apoplst nor symplast.
II. After binding of H+ to the symporter, the symporter is subjected to conformational changes in such a way that both H+ binding site and substrate binding site are exposed towards the solution of apoplast.
III. After binding of the substrate to the symporter, the H+ binding site is exposed towards the symplast and S binding site remained exposed towards apoplast.
IV. After the release of H+ into the symplast, symporter is subjected to conformational change to expose the S binding site towards the solution of symplast.





Ans:I and II
67 Identify the false pair




Ans:Apoplast - Antoporter
68 The essential element which is essential for binding ribosomal subunits is also essential as a structural component of
I. Cell membrane
II. Middle lamellum
III. P700
IV. Cytochrome





Ans:II and III
69 During the operation of H+ ATPase pump in the cell membrane of root cells, Primary active transport causes




Ans:decrease in pH of apoplast
70 The following biomolecules lack trace elements
I. Caroten
II. Cytochrome
III. Chlorophyll
III. ATP





Ans:All except II
71 Zn is essential for the formation of




Ans:Rooting hormone
72 [A]: Azolla is a Pteridophyte
[R]: It is true land plant





Ans:A is true but R is false

Asthra