Sunday, October 20, 2013


1.        Which branch of botany deals with functional aspects of plants?
           (a) Morphology            (b) Physiology
           (c) Ecology                  (d) Embryology          
2.        Who is called father of plant physiology?
           (a) Calvin                     (b) J.C. Bose
           (c) Stephen Hales         (d) Van Helmont
3.        If the cell is placed inhypertonic solution, what will happen?
           (a) Endosmosis            (b) Exosmosis
           (c) Deplasmolysis         (d) No change
4.        Diffusion pressure of pure solvent it:
           (a) Always more than its solution
           (b) Sometimes more than its solution
           (c) Less than its olution
           (d) Equal to its solution
5.        Suction pressure of cell as: (NEET)
           (a) Equal to wall pressure
           (b) Equal to turgor pressure
           (c) Equal to DPD
           (d) Osmotic pressure
6.        DPD (NEET)
           (a) OP X TP      (b) OP + TP
           (c) OP - WP       (d) TP - WP
7.        What will be zero in a fully turgid cell?
           (a) Pressure potential   (b) Osmotic potential
           (c) Water potential       (d) OP
8.        Plasma membrane controls:
           (a) Passage of
           (b) Passage of water and some solutes preferably in ionic form into and out of the cell
           (c) Passage of water and solutes into the cell
           (d) Passage of cell contents out of the cell
9.        In a flaccid cell, what will be zero? (NEET)
           (a) SP                 (b) OP            (c) DP  (d) WP
10.      In a flaccid cell: (NEET)
           (a) SP = TP        (b) water optential = OP
           (c) SP > OP       (d) SP < OP
11.      Whater potential can be calculated as
           (a)                      (b)
           (c) Osmotic Potential + Pressure potential
12.      Which of the following is aganist concentration gradient of solutes?
           (a) Transpiration           (b) Translocation
           (c) Diffusion                (d) Osmosis
13.      Seeds when placed in water swell because of
           (a) Osmosis                  (b) Root pressure
           (c) Imbibition               (d) Diffusion
14.      Cell A with OP = 6 and WP =  5 is surrounded by the cells with OP = 3 and TP = 2, What will be direction of water movement? (NEET)
           (a) From A to other cells
           (b) From other cells to A
           (c) No net movement
           (d) Waer will move up
15.      OP of the cell can be measured by : (NEET)
           (a) Monometric method
           (b) Photometric method
           (c) Plasmolytic method
           (d) Colorimetric method
16.      What determines the diffusion of water from one cell to other cell?
           (a) OP                                      (b) WP
           (c) water ptential          (d) TP
17.      Cell A has osmotic pot = -8 bars and pressure pot = 5 bars and cell B has osmotic pot = -12 bars and wall pressure 2 bars, what is direction of flow
           (a)                                 (b)
           (c) No movement         (d)
18.      Why plants die when over fertilized?
           (a) As a result of dehydration or exosmosis
           (b) Due to damage of walls of root hairs
           (c) Due to blockage of nitrogenous ions
           (d) Due of upsets in soil environment by poisonous soil bacteria.
19.      The form and structure of cell is maintained due to
           (a) Atmospheric pressure
           (b) Plasmolysis (c) Turgidity (d) WP
20.      The root hairs arise from:
           (a) Pericycle                 (b) Epiblema
           (c) Endodermis            (d) Cortex
21.      The root hairs zone in roots is :
           (a) Permanent               (b) Temporary
           (c) Both (a) and (b)      (d) None of these
22.      Root hairs are more developed in  (NEET)
           (a) herbs             (b) Shrubs
           (c) Trees             (d) Equality developed
23.      Water will be absorbed by root hairs when :
           (a) Concentration of salts in soil is high
           (b) Concentration of solutes in the cell sap is high
           (c) Plant is rapidly transpiring
           (d) They are separated from soil by semipermeable membrane
24.      Water from the soil enters into the root hairs on account of:
           (a) TP or WP
           (b) water potential gradient
           (c) Barometric pressure
           (d) Osmotic pressure
25.      The soil is physiloically dry when:
           (a) It has no hygroscopic water
           (b) conc. of soil solution is higher than cell sap
           (c) Soil temp is
           (d) Excess of  in soil
26.      Which of the following does not involve osmosis?
           (a) Water passing from root hais to adjacent cells
           (b) Water passing up a xylem element to another element above it
           (c) Waterentering mesophyll cell from xylem elements
           (d) Water from soil into the root hair
27.      The absorbed water can rise to highest point by :
           (a) Root pressure          (b) Imbibition force
           (c) Force of capillary    (d) Transpiration pull
28.      Water potential in dry seed is determined by
           (a) Osmotic potential   (b) Pressure potential
           (c) Matric potenital      (d) all the above
29.      Girdling experiment was first performed by :
           (a) Kramer                    (b) J.C. Bose
           (c) Strasburger             (d) hartig
30.                                 The pressure developed in tracheary elements of xylem due to merabolic activity of roots is called :
           (a) OP                                      (b) TP
           (c) Root pressure (d) Atmospheric pressure
31.      Root pressure is measured by: (NEET)
           (a) Potometer     (b) Baromter
           (c) Manometer   (d) Auxanometer
32.      Root pressure is maximum when :
           (a) Transpiration is high and absorption is low
           (b) transpiration is very low and absorption is high
           (c) Both are very high
           (d) Both are very low
33.      Sir J.C Bose was supporter of .... theory of ascent of sap.
           (a) Root pressure theory
           (b) Physical force theory
           (c) Vital force theory
           (d) None of these
34.      Term ‘Root pressure’ was first given by:
           (a) Priestly         (b) Stephen Hales
           (c) Syocking      (d) Godlewski
35.      Diffusion pressure declines by :
           (a) Addition of solute to solvent
           (b) Addition of solvent in solute
           (c) Diluting a solution
           (d) None of the above
36.      Ascent of sap in absence of roots was observed by
           (a) J.C Bose       (b) Priestly
           (b) Strasburger   (d) None of these
37.      Inverse correclation is observed in between (NEET)
           (a) Pressure potential and water potential
           (b) TP and WP 
           (c) DPD and SP
           (d) None of the above
38.      The theory of Dixon and Jolly gets support from (NEET)
           (a) dendrographic measurements
           (b) Porous pot experiment
           (c) High tensile strength strength of xylem sap
           (d) All of these
39.      Swelling of wooden doors during rainy season is due to:
           (a) Endosmosis  (b) Deplasmolysis
           (c) Capillarity    (d) Imbibition
40.      Many transplanted plants do not survive due to (NEET)
           (a) They do not like new soil
           (b) They do not get required mineral salt
           (c) Most of the root hairs are lost during transplantation
41.      A solution of 1m sucrose is sujected to an osmometer. It develops a pressure of 27 bars. Whihc of the following is correct?    (NEET)
           (a) Osmotic potential of solution is = 27 bars
           (b) Osmotic pressure is = 27 bars
           (c) Pressure potential is = 27 bars
           (d) Wall pressure is = 27 bars
42.      When a plant wilts, sequence of events will be as:
           (a) Exosmosis, deplasmolysis, plasmolysis, temporary and permanent wilting
           (b) Exosmosis, plasmolysis, deplasmolysis temporary and permanent wilting
           (c) Exosmosis, plasmolysis, temporary and permanent wilting
           (d) None of the above
43.      Pulsation theory of ascent of sap was proposed by
           (a) Dixon and Jolly      (b) J.C. Bose
           (c) Curtis and Clarke   (d) None of these
44.      First theory for the ascent of sap was proposed by
           (a) Westermaier            (b) J.C.bose
           (c) Godlewski              (d) Stephen Hales
45.      A girdled tree (upto bast) ,ay survive for some time but it will eventually die because.
           (a) Water will not move upwards
           (b) Water wull not move upwards
           (c) Sugars and other organic meterials will not move downwards
           (d) Sugars and other organic marerials will not move upwards
46.      How does the removal of a ring of bark and wood from the trunk of a tree kills ?
           (a) Mineral salts cannot go up
           (b) Immediate sroppage of photosynthesis
           (c) Food and water cannot be translocated
           (d) The exposed part dies due to heat
47.      Vital force theory for the ascent of sap was proposed by : (NEET)
           (a) Stephen Hales         (b) Boehm
           (c) Sachs                      (d) Goldewski
48.      Which of the following contributes most to transport of water from the ground to the levels of a tall tree?
           (a) Break down of ATP
           (b) Root pressure
           (c) Capillary rise of water in xylem
           (d) Cohesion of water and transpiration pull
49.      Xylem vessels are found in :
           (a) Gymnosperms only
           (b) Pteridophytes only
           (c) Angiosperms
           (d) Dicot plants only
50.      The cohesive force of water is due to:
           (a) S-bonds        (b) O-bonds
           (c) H-bonds       (d) OH-bonds
51.      When stem of plant is girdled (ringed) :
           (a) The root dies first
           (b) The shoot dies first
           (c) The roots and the shoot will die at the same time
           (d) Neither the root nor the shoot wilts
52.      Diffusion pressure is directly proportional to:
           (a) Concentration of molecules diffusing
           (b) Kinetic energy of diffusing molecules
           (c) Concentration gradient
           (d) All of the above
53.      What should happen if a thin slice of sugar beet is placed in a concentrated solution of NaCl?
           (a) It should becomes turgid
           (b) It should neither absorb water nor loose it
           (c) It should absorb water from the NaCl solution
           (d) It should loos water from the cells
54.      Epidermal peeling of Tradescantia leaf is used for demonstrating:
           (a) Plasmolysis and deplasmolysis
           (b) Active absorption
           (c) Passive absorption
           (d) Mineral absorption
55.      If cell A with OP = 5 and TP = 4 is surrounded by the cells with OP = 3 and TP = 1, what will be direction of water movement? (NEET)
           (a) Water will not move up
           (b) Water will move up
           (c) From cell A to other cell
           (d) From other cells to cell A
56.      Ringing (girdling) experiment cannot be performed in
           (a) Sugarcane     (b) Mango
           (c) Indian rubber plant (d) Tectona
57.      amount of water left in soil after through drainage of gravitational water is known as: (NEET)
           (a) Field capacity         (b) Storage capacity
           (c) Soil water     (d) Gravitational capacity
58.      Which of following is correct regarding the translocation of substances in vascular tissues of plants?
           (a) Organic substances, e.g, sugars are transported upward in the xylem
           (b) Organic substances move up and down the phloem
           (c) Salts and other inorganic substances move downward only through the xylem
           (d) Inorganic substances move upward only through the phloem
59.      Opening and closing of stomata is due to the
           (a) hormonal change in guard cells
           (b) change in turgor pressure of guard cells
           (c) gaseous exchange
           (d) respiration
60.      Guard cells help in
           (a) transpiration            (b) guttation
           (c) fighting against infection
           (c) protection against grazing
61.      Which of the following helps in ascent of sap?
           (a) root pressure (b) transpiration
           (c) capillarity                (d) all of these
62.      The process of water exudation through hydathodes is called
           (a) excretion                 (b) transpiration
           (c) guttation                 (d) hydrolysis
63.      Active  exchange mechanism for opening and closing of stomata was given by
           (a) Khorana                  (b) Levitt
           (c) Deblin                     (d) Seath
64.      Which of the following theory gives the latest explanation for the closure of stomata?
           (a) ABA theory (b) Munch theory
           (c) Starch glucose theory
           (d) Active  tansport theory
65.      Which of the following chemical serves as an antitranspirant in plants? (NEET)
           (a) cobalt chloride
           (b) dimethyl mercury
           (c) potassium iodide
           (d) phenyl mercyric acetate
66.      Guttation is the release of liquid water from veins at the leaf margins. it is caused by
           (a) transpiration
           (b) high leaf pressure
           (c) high root pressure
           (d) clogged tracheids or vessel elements
67.      Transpiration is measured by (NEET)
           (a) potometer               (b) dendometer          
           (c) porometer               (d) Moll’s apparatus
68.      Wilting of plant occurs when
           (a) xylem is blocked
           (b) phloem is blocked
           (c) epidermis and few root are removed
           (d) pith is removed
69.      The soil water available for absorption by plant roots is
           (a) rain water                (b) capillary water
           (c) chemically bound water
           (d) gravitational water
70.      Translocation of minerals takes place through
           (a) phloem                    (b) xylem
           (c) cambium       (d) wood parenchyma
71.      The continuity of water column in xylem is maintained due to
           (a) evaporation power of water
           (b) cohesive property of water
           (c) presence of air bubbles
           (d) none of the above
72.      ‘Transpiration is a necessary evil”, this statement belongs to
           (a) Burgerstein             (b) Reschke
           (c) Curtis                      (d) Willmer
73.      Who among the following scientists first gave the starch sugar interconversion theory for stomatal movements? (NEET)
           (a) Loftfield                 (b) Lloyd
           (c) Sayre                       (d) Von Mohl
74.      Some carrier proteins allow transport only if two types of molecules move together. This is called co-transport. It may be
           (a) Symport                  (b) antiport
           (c) (a) and (b)               (d) equiport
75.      Stomata open when the guard cells have
           (a) more                        (b) less
           (c) more abscissic acid (d) all of these
76.      Which of the following is not afactor controlling osmosis
           (a) presence of semipermeable membrane
           (b) concentration gradient
           (c) colour of substance
           (d) difference in pressure
77.      Water potential is not measured in
           (a) atmosphere             (b) bars
           (c)pascals                     (d) molar unit
78.      Which is the first to occur in seed germination
           (a) diffusion                 (b) imbibition
           (c) osmosis                   (d) none
79.      Column - I                   Column - II (NEET)
           (a) Priestley       i) Capillary force theory
           (b) Boehm         ii) Osmotic theory
           (c) Godlewski    iii) Root pressure theory
           (d) Atkins          iv) Realy pump theory
           (e) Sachs            v) Imbibition theory
                                                a          b          c          d          e
                                      (a)      iii         i           iv         ii          v
           (b)                      iv        i           v          ii          iii
           (c)                      v         iii         iv         i           ii
           (d)                      ii         v          iii         iv         i
80.      Which arbitrary values of DPD, OP and TP appear correct for a turgid cell? (NEET)
           (a) DPD 02 atm ; OP 07 atm ; TP 5 atm
           (b) DPD 00 atm; OP 15 atm ; TP 15 atm
           (c) DPD 10 atm; OP 15 atm ; TP 6 atm
           (d) DPD 05 atm; OP 12 atm ; TP 7 atm
81.      Bacteria cannot survive in a highly salted pickle because:
           (a) Salt inhibits reproduction of bacteria
           (b) Enough light is unavaiable for photosynthesis
           (c) They become plasmolysed and killed
           (d) Nutrients in the pickle medium cannot support life
82.      Osmoscope is used for :
           (a) Measuring OP         (b) Measruing TP
           (c) Measuring
           (d) Demonstration of osmosis
83.      Osmosis means :
           (a) movement of molecules from higher concentration to lower concentration
           (b) Uptke of water by roots
           (c) Passage of solvent from a weaker solution to stronger solution across a semipermeable membrane
           (d) passage of solvent from a weaker to a stronger solution
84.      The main difference between active and passive transport across cell membrane is that:
           (a) Active transport is more rapid than passive
           (b) passive transport is non-selective
           (c) Passive transport is due to the concentration gradient across the cell membrane whereas active transport is due to metabolic energy
           (d) Passive transport is confined to anions, whereas active transport is confined to cations only
85.      Id cells kept for sometime in 1 M solution of sucrose and 1 M solution of NaCl. The water potenital  of the cells kept in : (NEET)
           (a) Sucrose solution will be greater
           (b) NaCl solution will be grater
           (c) Both will be equal
           (d) Sucrose solution would be lower and NaCl solution would be greater
86.      Water is absorbed when outside solution is
           (a) Hypertonic              (b) Hypotonic
           (c) Isotonic                   (d) None of these
87.      Actively growing plant tissues have a water content of
           (a) 20 - 40%                 (b) 40 - 50%
           (c) 65 - 75%                 (d) 85 - 90%
88.      0.5 M  sucrose solution develops a pressure of 15 bars in an osmometer, which of the following statement is wrong for such asolution?
           (a) That its osmotic potenital is - 15 bars
           (b) That its water potential is - 15 bars
           (c) That is pressure potential is -15 bars
           (d) That its osmotic pressure +15 bars
89.      Osmosis involves
           (a) Cell to cell movement of water
           (b) Movement of water through cortical cells
           (c) Passive absorption of water through roots
           (d) All of the above
90.      Water absorption through roots can be increased by
           (a) Increased transpiration
           (b) Increased rate of phtosunthesis
           (c) Decreased transpitation
           (d) Decreased absorption of ions
91.      What happens when a formalin preserved filament of Spirogyra is placed a hypertonic sugar solution?
           (a) It losse turgidity     (b) it gains turgidity
           (c) It is plasmolysed     (d) Nothing happens
92.      Imbibition process involves
           (a) both diffusion and capillary action
           (b) Only diffusion
           (c) Only capillary action
           (d) None of the above
93.      A cell placed in hypertonic solution plasmolyses, the space between the cell wall and plasmolysed contents is filled with;
           (a) Water           (b) Cell sap
           (c) Hypertonic solution or outer solution
           (d) Hypertonic solution and cell sap
94.      Root pressure is due to :
           (a) Passive absorption
           (b) Active absorption
           (c) Increase in transpiration
           (d) Increase in photosynthesis
95.      Root hairs cells under ordinary conditions typically have water potential inthe range of
           (a) 1 to 4 atmospheres
           (b) -1 to -4 atmospheres
           (c) 1 to 2 atmospheres
           (d) -1 to 2 atmospheres
96.      The direction and rate of water movement form cell to cell is based on  (NEET)
           (a) Wp                                      (b) TP
           (c) DPD gradient(d) Incipient plasmolysis
97.      A higher plant cell, impregnated with cutin and suberin is placed in water, what would happen after 15 minutes? (NEET)
           a)cell size will increase
           b) cell size will decrease
           c)no change in the cell
           d) cell would be killed
98.      Osmotic pressure of cell sap is highest in  (NEET)
           (a) Halophytes             (b) Mesophytes
           (c) Hydrophytes           (d) Lithophytes
99.      Conduction of sap in plants occurs through :
           (a) heart wood only     (b) Sap wood only
           (c) Xylem as whole      (d) All these
100.    Water potential of a ell is lowered by
           (a) Addition of solutes
           (b) Increasing temperature
           (c) Addition of water
           (d) Decreasing the tmperature

01-10                    b         c          b          a          c          c          c          b          d          b
11-20                    c         d          c          c          c          c          a          a          c          b
21-30                    b         a          b          b          b          b          d          d          d          c
31-40                    c         b          c          b          a          c          c          d          d          c         
41-50                    a         a          b          c          c          c          d          d          c          c
51-60                    a         d          d          a          c          a          a          b          b          a
61-70                    d        c          b          d          d          c          a          a          b          b
71-80                    b         c          b          c          a          c          d          b          a          b
81-90                    c         d          c          c          a          b          d          c          d          a
       91-100      d           a         c          b          b          c          c          a          b          a

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