Bio Gyan Transport in Plants.docx

“BIO-GYAN”

(An initiative by Dr. V.S. Raghuvanshi, 9896490308)House No. 89 Sector-5, Urban Estate, KURUKSHETRA

&KARNAL and PANIPAT

Topic: - Transport in Plant

General Information/ Instructions:

1. This question booklet contains 8 pages and 50 questions.2. Total time allotted for this test is 50 minutes, maximum marks will be 200.3. + 4 marks will be awarded for every correct answer, -1 mark will be deducted for incorrect answer and

zero mark for un-attempted question.4. Direction for Assertion reason questions, a statement of assertion is given and a corresponding statement

of a reason is given just below it. Of the statements, mark the correct answer as —(a) If both Assertion & Reason are true and the reason is the correct explanation of the assertion.(b) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.(c) If Assertion is true statement but Reason is false.(d) If both Assertion and Reason are false statements.5. OMR answer sheet provided at the end of this question booklet.6. Answers are to be marked properly with blue/black ball point pen on OMR sheet.7. No unfair means/things/activity is allowed in the examination hall which may dilute the purpose of the

test.8. Wishing you all the best in your endeavors to achieve the goal.

PlasmaMembrane

Inner side of cellOuter side of cell

TransporterProtein

Topic: Transport in Plants BIO – GYAN CLASSES (Dr. V.S. Raghuvanshi, 9896490308)

1. Over small distance substances move by(A) by diffusion (B) by cytoplasmic streaming (C)by active transport(D)all of the above

2. Read the statement (i) and (ii), fill in the blanks (i) In plants, transport over longer

distances through xylem and phloem is known as ………………

(ii) The bulk movement of substances through the conducting or vascular tissues of plants is called ……….

(A) i – Translocation, ii - transpotation(B) i – Translocation, ii - translocation(C) i – Translocation, ii – transpiration

pull(D)None of these

3. How many statement/s is/are not true w.r.t any plant part undergo senescence(i) Nutrients may be withdrawn from

such region(ii) Plant growth regulator are also

transported along with the other chemical stimuli

(iii) Sometime large amount of hormones are transported, sometimes in a strictly polarized manner

(iv) There are four elements which are readily mobilized found in plants

(v) There are some element which are not withdrawn condition whatsoever

(A) 1(B) 2(C)3(D)4

4. Water potential of pure water at standard temperature which is not under any pressure is equal to (A) 10(B) 20

(C) 0(D) 1

5. Diffusion is very important to plants because(A) only means of mineral transport(B) only means of water transport(C)only means of sucrose transport(D)only means of gaseous movement

6. Rate of diffusion is not affected by(A) concentration gradient and size of

the substance(B) permeability of the plasma

membrane and its solubility in transporter protein

(C) temperature and pressure(D)None of the above

7. Observe the diagram given below and choose the best answer

(A) diffusion(B) simple diffusion(C)Facilitated diffusion(D)Uniport

8. What is not true about facilitated diffusion(A) move substances across membranes

without expenditure of ATP energy(B) can cause net transport of molecules

from low to high concentration without ATP

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(C) transport rate reaches maximum when all of the protein transporter are being used and is very specific

(D)none of the above9. In plasma membrane, water channel are

made up of(A) eight different type of porin(B) eight similar type of aquaporin(C)eight different type of lipoproteins(D)None of these

10.Observe the given below diagram carefully and choose the best answer w.r.t diagram

(A) Passive process(B) Active process(C)Diffusion(D)Facilitated diffusion

11.Behaviour of the carrier protein in plasma membrane is very similar to(A) phospholipids(B) enzyme(C) Apoenzyme(D) Both (B) and (C)

12.Uphill transport w.r.t plasma membrane means(A) use of ADP during transporting any

substance across the plasma membrane

(B) transport substance from high to low concentration across the plasma membrane

(C) transport substance from low to high concentration across the plasma membrane

(D)Both (A) and (C)

13.A and B are two adjacent plant cells where osmotic movement of water can occur. Cell A has an osmotic pressure (OP) of 16 atm., and turgor pressure (TP) of 8 atm., where as cell B has OP of 12 atm., and TP of 2 atm. Determine the direction of flow of water in the cell?(A) Cell A to Cell B(B) Cell B to Cell A(C)Net movement is zero between Cell

A and Cell B(D)Given data insufficient

14.D.P.D of plasmolysed cell is(A) < OP(B) > OP(C)Remained unchanged(D)None of these

15.Turgor pressure of a flaccid cell is equal to(A) >1(B) <1(C)0(D)None of these

16.Value of osmotic potential and pressure potential of cell a,b,c and d are given

Cell

Osmotic potential

Pressure potential

a - 1.0 0.5 b - 0.6 0.3c - 1.2 0.6D - 0.8 0.4

Identify the correct sequence for movement of water(A) b → d → a → c(B) d → c → a → b(C) c → b → a → d(D)b → c → d → a

17.Read the following statements and answer the question as asked next to them(i) Watermelon has over 92 per cent

water(ii) herbaceous plants have only about

15 to 20 per cent of its fresh weight as dry matter

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(iii)Viable seed is not dry at all although it may be appear dry

(iv) A mustard plant absorbs almost three litres of water in 24 hours

(v) A mature corn plant absorbe water equal to its own weight in about 5 hours

(vi) Movement of a molecule across a typical plant cell (about 50 micro meter) takes approximately 2.5 s.

How many are correct statements?(A) 1(B) 2(C)3(D)None of these

18.Number of stomata and epidermal cells/mm2 of lower epidermis of X, Y and Z plants are as follows.Plant Stomata Epidermal

cellX 30 150Y 60 240Z 90 400

Arrange them in decreasing order of their stomatal index(A) Z, Y, X(B) X, Y, Z(C)Y, X, Z(D)Y, Z, X

19.Which of the following statements are not true(i) In CAM plant, stomata open

during dark and remain closed during day

(ii) Role of Na+ in stomata opening is now universally accepted

(iii) Water potential in root cells is higher than water potential of soil

(iv) Water moves out; it is 1st from cytoplasm than from vacuole, when a plant cell placed in hypertonic solution

(v) In potato osmometer experiment, water might flow out of the cavity

made in potato if the tuber is placed in sugar solution

(A) (ii), (iii), (v)(B) (ii), (iii) and (iv)(C) (i), (ii) and (iii)(D)(ii) and (iii)

20.If the value of Ψw is -10 bars for a cell then for the same given situation D.P.D value of the same cell will be(A) 10 atm(B) 10 bars(C)equal to Ψw(D)equal to O.P

21.Colligative property is(A) O.P and Cohesive force(B) Vapour pressure and surface tension (C)Cohesive force and surface tension(D)O.P and Change in vapour pressure

22.Observe the below experimental set up based on that select the correct answer from the options

(A) Water will move from B to A(B) D.P.D of chamber B > D.P.D of

chamber A(C)Ψw of chamber A > Ψw of chamber B (D)Both (B) and (C) are correct

23.Water potential of a pond e.g., Brahmsarovar is equal to(A) can’t be predict(B) < 0(C)> 0(D)equal to solute potential

24.Followings are some scientific steps to get semi-permeable membrane from an egg.(i) remove the yolk and albumin by

breaking egg into two pieces

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'X’ 'Y’ 'Z’


(ii) place the shell into dilute solution of hydrochloric acid

(iii) place the shell into concentrated solution of hydrochloric acid

(iv) egg shell should be there in hydrochloric acid for ½ hr

Find out step or steps which are not applicable as a standard procedure here(A) (i) and (iii) only(B) (i) , (iii) and (iv) only(C) (i) , (ii) and (iv) only(D)(i) and (ii) only

25.Which is possible for fully turgid cell(A) D.P.D = 10 atm, O.P = 15 atm, T.P =

5 atm(B) D.P.D = 0.2 atm, O.P = 0.7 atm, T.P

= 0.5 atm(C)D.P.D = 0.0 atm, O.P = 15 atm, T.P

= 15 atm(D)D.P.D = 5 atm, O.P = 12 atm, T.P =

7 atm26.Which is not incorrect w.r.t imbibition

(A) The substance which imbibes water is called imbibant

(B) Temperature increases when imbibition takes place

(C) For any substance to imbibe any liquid, affinity between the adsorbant and the liquid is a pre-requisite

(D)All of the above27.Select a mismatch

(A)

Positive hydrostatic pressure

- root pressure

(B)

Negative hydrostatic pressure

- transpiration pull

(C)

Mass flow - en masses

(D)

Negative hydrostatic pressure

-e.g., garden hose

28.Statement 1: Some plant growing near the nuclear test

sites takes up radioactive strontiumStatement 2: Transport proteins of

endodermal cells are control points where a plant adjusts the quantity and type of solute that

reaches the xylem Choose the best answer from the answer

(A) Statement 1 and statement 2 are not incorrect but statement 2 is not a correct explanation of statement 1

(B) Statement 1 is not correct but statement 2 is not incorrect

(C) Statement 1 and statement 2 are incorrect

(D) None of these29.Observe the given below cells, choose

the best answer from the options

(A) Cell A – Plasmolysed, Cell B – Turgid, Cell C - Flaccid

(B) Cell A – Plasmolysed, Cell B – Flaccid, Cell C – turgid in hypertonic solution

(C)X – hypertonic solution, Y – cytoplasm, Z – low pH

(D)X – hypertonic solution, Y – cytoplasm, Z – high pH

30.Suppose given below diagram is of germinating seedling of pinus, the most essential part visibly missing in the diagram is/are

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D

CB

A


(A) symbiotic bacteria(B) Root(C)Micorrhiza(D)Both (A) and (C)

31.The apoplast movement of water occurs exclusive through the ………(A) walls of the cells only(B) intercellular spaces only(C) intracellular spaces only(D)Both (A) and (B)

32.Although the volume of imbibant increases, the final volume of the imbibant plus the volume of water decreases and is less than what it was before the starting of imbibitions. This is because(A) Water molecule are loosely absorbed (B) Water molecule are tightly absorbed(C)Water molecule are loosely adsorbed(D)Water molecule are tightly adsorbed

33.The movement of …………… is easily visible while studying the phenomena of cytoplasmic streaming in Hydrila leaf(A) nucleus(B) vacuole(C) chloroplast(D)centrosome

34.Observe the give below diagram of root and answer the question asked next to it

Choose the place indicated as alphabets A, B, C and D where water can enter directly into xylem vessels and / or trachieds?

(A) simply not possible as water has to through symplast movement at endodermis before enter into xylem

(B) C only(C)A, B, C and D(D)A, B and C

35.What is not true about mycorrhiza(A) Symbiotic association of a fungus

with root system(B) The fungal filaments only form a

network around the young root(C)The fungus provides mineral and

water to roots(D)Root provide sugar and N-containing

compound to the mycorrhiza 36.Select an incorrect statemet w.r.t

guttation(A) also observable at night and early

morning(B) main cause is root pressure(C) controlled process associated with

water loss as in transpiration but in liquid form

(D)none of these37.During transpiration the flow of water

upward through xylem in plants can achieve fairly high rates, up to ………..(A) 10 meters per hour(B) 15 meter in a day(C)15 meter per hour(D)None of these

38.The opening of stomata during transpiration is due to (A) endosmosis in guard cell also aided

by orientation of microfibrils in cytoplasm

(B) exo-osmosis in guard cell also aided by orientation of microfibrils in cytoplasm

(C)endosmosis in guard cell also aided by orientation of microfibrils in cell wall of subsidiary cells

(D)endosmosis in guard cell also aided by orientation of microfibrils in cell wall of guard cell

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Sugar solution flows to regions of low turgor pressure

Sugar leaves sieve tube for metabolism and storage; water follows by osmosis

Root

Phloem

Sugar enter sieve tubes; water follows by osmosis= High turgor pressure

Tip of stem

Sugar leave sieve tubes; water follows by osmosis

D

C

AB

GE F H


39.What creates a ‘pull’ in transpiration pull(A) lower concentration of water vapour

in the atmosphere as compared to substomatal cavity only

(B) lower concentration of water vapour in the atmosphere as compared to substomatal cavity and intercellular spaces

(C)positive hydrostatic pressure(D)Both (B) and (C)

40.Observe the given below diagrammatic representation of mechanism of translocation find out is there anything /s missing to make it more meaningful

(A) 1(B) 2(C)3(D)None

41.Measurement reveals that the forces generated by transpiration can create pressure sufficient to lift a xylem sized column of water ………(A) maximum up to 130 meter high(B) over 180 meter high(C)over 130 meter high(D)None of these

42.Observe the given below anatomical diagrammatic diagram of root, find out incorrect labeling w.r.t alphabetic position A, B, C, D, E, F, G and H

(A) A – Xylem, B - Edodermis(B) C – Symplastic path, D – Apoplastic

path(C)E – Cortex, F – Casperian strip(D)G – Phloem, H - Pericycle

43.The transpiration driven ascent of xylem sap depends mainly on which physical property of water?(A) Cohesion(B) Adhesion(C)Surface tension(D)all of the above

44.Select an incorrect statement from the following(A) C4 plants are twice as efficient as C3

plant in terms of fixing carbon(B) C4 plants loses only half as much

water as a C3 plant for the same amount of CO2 fixed

(C)during strong sunlight rate of transpiration in CAM plant is less than C4 plant

(D)during day rate of transpiration in C4

plant is less than C3 plant45.Select the incorrect statement w.r.t

xylem exudates (A) some of the nitrogen travels as

inorganic form and small amount of P and S are carried as organic compounds

(B) much of the nitrogen is carried in the organic form as amino acids and related compounds

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(C) large amount of exchange of materials dose take place between xylem and phloem

(D)none of these46.A girdled plant (upto bast) may survive

for some time but it will eventually die, because(A) water will not move downwards(B) water will not move upwards(C) sugar and other organic materials

will not move downward(D)sugar and other organic material will

not move upward47.Which one of the following will not

directly affect transpiration? (A) Temperature(B) Light(C)Wind speed(D)Chlorophyll content of leaves

48.Keeping in mind mass flow hypothesis, at sink, incoming sugars are …(I)…

transported out of the phloem and removed as …(II)… carbohydrates (Fill in the blanks) (A) I – passively, II - simple(B) I – actively, II - simple(C) I – actively, II - complex(D)I – passively, II - complex

49.Girdling experiment can not be carried out in(A) monocot(B) dicot(C)plant having bicollateral vascular

bundle(D)Both (A) and (C)

50.Transpiration cools leaf surface, sometime ……(I)……. to ……(II)……. degree(A) I – 10, II - 20 (B) I – 10, II - 25(C) I – 10, II - 15(D)None of these

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Bio Gyan Transport in Plants.docx