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Transport in Plants — NEET UG Botany PYQs

228 previous year questions from Transport in Plants with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

228 questionsBotanySolutions on every page

Which of the following helps in maintenance of the pressure gradient in sieve tubes?

NEET 2024 Solution View → 2

In the given figure, which component has thin outer walls and highly thickened inner walls?

NEET 2024 Solution View → 3

Match List I with List II: List I List II A.Cohesion I. More attraction in liquid phase B. Adhesion II. Mutual attraction among water molecules C. Surface tension III. Water loss i

NEET 2023 Solution View → 4

During symport two different molecules move across the membrane

NEET 2023 Solution View → 5

Identify the correct statements regarding Mass flow hypothesis. (A) Mass flow is faster than diffusion. (B) Mass flow is the result of pressure difference between the end points. (

NEET 2023 Solution View → 6

Given below are two statements : Statement I: The process of translocation through phloem is unidirectional but through xylem, it is bidirectional. Statement II: The most readily m

NEET 2023 Solution View → 7

Movement and accumulation of ions across a membrane against their concentration gradient can be explained by:

NEET 2023 Solution View → 8

Given below are two statements: Statement I: The forces generated by transpiration can create pressures sufficient to lift a xylem sized column of water over 130 metres high. State

NEET 2023 Solution View → 9

Which of the following is not observed during the apoplastic pathway?

NEET 2022 Solution View → 10

Addition of more solutes in a given solution will:

NEET 2022 Solution View → 11

"Girdling Experiment" was performed by Plant Physiologists to identify the plant tissue through which:

NEET 2022 Solution View → 12

When a carrier protein facilitates the movement of two molecules across the membrane in same direction, it is called :

NEET 2022 Solution View → 13

Match List - I with List - II. List-I List-II (a) Cohesion (i) More attraction in liquid phase (b) Adhesion (ii) Mutual attraction among water molecules (c) Surface tension (iii) W

NEET 2021 Solution View → 14

Select the incorrect statement.

NEET 2020 Solution View → 15

The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is

NEET 2020 Solution View → 16

Which ion helps in opening and closing of stomata?

NTA Abhyas NEET 2020 Solution View → 17

The adsorption of water by hydrophilic compounds like cellulose and pectin in root hair cell wall is called _______.

NTA Abhyas NEET 2020 Solution View → 18

Which of the following statement is true?

NTA Abhyas NEET 2020 Solution View → 19

In rainy season, door gets swelled due to

NTA Abhyas NEET 2020 Solution View → 20

Active transport of ions by the cell requires

NTA Abhyas NEET 2020 Solution View → 21

Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (a-e) make it useful as a storage material? (a) Easily transloc

NTA Abhyas NEET 2020 Solution View → 22

The force of tension cohesion exceeds root pressure on a

NTA Abhyas NEET 2020 Solution View → 23

The rate of transpiration increases with the decrease of

NTA Abhyas NEET 2020 Solution View → 24

Plasmodesmata are cytoplasmic bridges between adjacent plant cells, lined by

NTA Abhyas NEET 2020 Solution View → 25

Which of the following does not play any role in the movement of water through the xylem?

NTA Abhyas NEET 2020 Solution View → 26

The water potential and osmotic potential of pure water is

NTA Abhyas NEET 2020 Solution View → 27

The most widely accepted theory of ascent of sap in trees is

NTA Abhyas NEET 2020 Solution View → 28

Root pressure is maximum when

NTA Abhyas NEET 2020 Solution View → 29

Which of the following has the maximum water potential?

NTA Abhyas NEET 2020 Solution View → 30

A cell increases in volume, if the external medium is

NTA Abhyas NEET 2020 Solution View → 31

The movement of mineral ions into plant root cells as a result of diffusion is called

NTA Abhyas NEET 2020 Solution View → 32

Path of water movement from soil to exarch xylem is

NTA Abhyas NEET 2020 Solution View → 33

What is the main function of anti-transpirants?

NTA Abhyas NEET 2020 Solution View → 34

The main function of phloem is translocation of

NTA Abhyas NEET 2020 Solution View → 35

Which of the following is/are pre-requisite(s) for imbibition? (a) Presence of mucilage in the adsorbent. (b) The affinity between the adsorbent and the liquid. (c) Water potential

NTA Abhyas NEET 2020 Solution View → 36

A leaf peeling of Tradescantia is kept in a medium having 10% NaCl. After a few minutes, if we observe the leaf peel under the microscope, we are likely to see

NTA Abhyas NEET 2020 Solution View → 37

Lowering in magnitude of water potential due to dissolution of a solute is called

NTA Abhyas NEET 2020 Solution View → 38

What will be the effect of the accumulation of K + ions in guard cells?

NTA Abhyas NEET 2020 Solution View → 39

A cell swells up when kept in

NTA Abhyas NEET 2020 Solution View → 40

Water potential is equal to

NTA Abhyas NEET 2020 Solution View → 41

Consider the following: i. For a solution at atmospheric pressure Ψ w = Ψ s ii. Ψ w (water potential) of a cell is affected by solute potential only iii. Ψ p (pressure potential) i

NTA Abhyas NEET 2020 Solution View → 42

Identify the type of transport labelled (i), (ii), and (iii) in the diagram given below.

NTA Abhyas NEET 2020 Solution View → 43

Water potential of actively absorbing cells is

NTA Abhyas NEET 2020 Solution View → 44

The mechanism universally accepted to describe the translocation of sugars from source to sink is called

NTA Abhyas NEET 2020 Solution View → 45

Which of the following statements is incorrect?

NTA Abhyas NEET 2020 Solution View → 46

Translocation of food in plants was demonstrated by

NTA Abhyas NEET 2020 Solution View → 47

Stomata are not found in

NTA Abhyas NEET 2020 Solution View → 48

In plants, potential in the water column in the xylem plays a major role in water transport up a stem.

NTA Abhyas NEET 2020 Solution View → 49

The continuous upward flow of water stream in tall trees is maintained due to ______________________.

NTA Abhyas NEET 2020 Solution View → 50

Transpiration has more than one purpose. Which of the following is not the purpose of transpiration?

NTA Abhyas NEET 2020 Solution View → 51

Look at the following diagram showing facilitated diffusion across the membrane. Identify its type.

NTA Abhyas NEET 2020 Solution View → 52

How many of the following statements are not correct? [I] In a flowering plant the substances that would need to be transported are water, mineral nutrients, organic nutrients and

NTA Abhyas NEET 2020 Solution View → 53

Which one of the following statements is wrong?

NTA Abhyas NEET 2020 Solution View → 54

The osmotic pressure of 1 M solution of sucrose is 22.4 atm. What will be the osmotic potential of 0.1 M sucrose solution?

NTA Abhyas NEET 2020 Solution View → 55

The phenomenon of uptake of water at the expense of energy by the cell and usually against the osmotic gradient is known as

NTA Abhyas NEET 2020 Solution View → 56

Which of the following is not common between facilitated transport and active transport?

NTA Abhyas NEET 2020 Solution View → 57

For a solution at atmospheric pressure, water potential is

NTA Abhyas NEET 2020 Solution View → 58

The suction pressure of the cell is

NTA Abhyas NEET 2020 Solution View → 59

Select the incorrect w.r.t cytoplasmic streaming.

NTA Abhyas NEET 2020 Solution View → 60

Root pressure is maximum when

NTA Abhyas NEET 2020 Solution View → 61

Exudation and guttation are due to

NTA Abhyas NEET 2020 Solution View → 62

Diffusion rates are affected by:

NTA Abhyas NEET 2020 Solution View → 63

Which of the following determines the diffusion of water from one cell to another?

NTA Abhyas NEET 2020 Solution View → 64

Which one of the following statement is incorrect regarding diffusion pressure deficit (DPD)?

NTA Abhyas NEET 2020 Solution View → 65

Which of the following transport mechanisms shows saturation of transport but does not show uphill transport?

NTA Abhyas NEET 2020 Solution View → 66

The absorbed water can rise to the highest point by

NTA Abhyas NEET 2020 Solution View → 67

The cohesive force of water is due to

NTA Abhyas NEET 2020 Solution View → 68

Most herbaceous plants have only about ____________ of its fresh weight as dry matter.

NTA Abhyas NEET 2020 Solution View → 69

Cell A with O P = 6 and W P = 5 is surrounded by the cells with O P = 3 and T P = 2 , what will be the direction of water movement?

NTA Abhyas NEET 2020 Solution View → 70

Accumulation of which one of the following acids results in the closure of stomata.

NTA Abhyas NEET 2020 Solution View → 71

In flowering plants, the substances that would need to be transported are:

NTA Abhyas NEET 2020 Solution View → 72

When a solute is mixed, the water potential of the cell

NTA Abhyas NEET 2020 Solution View → 73

The process by which substances are transported over a long distance in plants through the vascular system is called:

NTA Abhyas NEET 2020 Solution View → 74

Organic compounds synthesis in the plant is transported in which of the following ways in flowering plants:

NTA Abhyas NEET 2020 Solution View → 75

If the cell is placed in a hypertonic solution, what will happen?

NTA Abhyas NEET 2020 Solution View → 76

In facilitated diffusion

NTA Abhyas NEET 2020 Solution View → 77

Water will be absorbed by root hairs when:

NTA Abhyas NEET 2020 Solution View → 78

The process by which hydrophilic molecule move across the membrane by proteins is known as

NTA Abhyas NEET 2020 Solution View → 79

Diffusion of a molecule from low concentration to the high concentration

NTA Abhyas NEET 2020 Solution View → 80

Which of the following is reducing and non-reactive sugar?

NTA Abhyas NEET 2020 Solution View → 81

A cell is equally permeable to sucrose solution and NaCl solution. First the cell is put in 0.6 M sucrose solution there is no change in size but when put in 0.6 M NaCl solution th

AIIMS 2019 Solution View → 82

The concentration of solute in four cells is 0.4 M . They are placed in four separate containers I, II, III and IV, filled with saline water of concentrations 0.1 M , 0.4 M , 2 M a

AIIMS 2019 Solution View → 83

Identify (i), (ii) and (iii) in the given diagram.

AIIMS 2019 Solution View → 84

Cell placed in hypertonic solution is shown by

JIPMER 2019 Solution View → 85

Which of the following is not a feature of active transport of solutes in plants?

NEET 2019 Solution View → 86

What will be the direction of flow of water when a plant cell is placed in a hypotonic solution?

NEET 2019 Solution View → 87

The main difference between active and passive transport across cell membrane is

NEET 2019 Solution View → 88

What is the direction of movement of sugars in phloem?

NEET 2019 Solution View → 89

Identify (i), (ii) and (iii) in the given diagram.

NEET 2019 Solution View → 90

A cell is equally permeable to sucrose solution and NaCl solution. First the cell is put in 0.6 M sucrose solution there is no change in size but when put in 0.6 M NaCl solution th

NEET 2019 Solution View → 91

The concentration of solute in four cells is 0.4 M . They are placed in four separate containers I, II, III and IV, filled with saline water of concentrations 0.1 M , 0.4 M , 2 M a

NEET 2019 Solution View → 92

Cell placed in hypertonic solution is shown by

NEET 2019 Solution View → 93

Assertion : Film forming chemical should not be used for checking transpiration. Reason: Film forming chemicals interrupt transpiration, photosynthesis and respiration.

AIIMS 2018 Solution View → 94

Assertion : Transpiration occurs only when stomata are open. Reason : Transpiration occurs only through stomata.

AIIMS 2018 Solution View → 95

Which one of the following statements is correct with respect to salt water balance inside the body of living organisms?

AIIMS 2018 Solution View → 96

Which of the following elements is responsible for maintaining turgor in cells?

NEET 2018 Solution View → 97

Stomata in grass leaf are

NEET 2018 Solution View → 98

Stomatal movement is not affected by

NEET 2018 Solution View → 99

Assertion : Transpiration occurs only when stomata are open. Reason : Transpiration occurs only through stomata.

NEET 2018 Solution View → 100

Which one of the following statements is correct with respect to salt water balance inside the body of living organisms?

NEET 2018 Solution View → 101

Assertion : Film forming chemical should not be used for checking transpiration. Reason: Film forming chemicals interrupt transpiration, photosynthesis and respiration.

NEET 2018 Solution View → 102

Assertion : Translocation of sugar from source (leaf) to sink is defined as pressure flow hypothesis. Reason: Translocation of the solute is facilitated through living phloem sieve

AIIMS 2017 Solution View → 103

The water logging capacity of garden soil will be determined by measuring the weight of

AIIMS 2017 Solution View → 104

Munch hypothesis is based on

JIPMER 2017 Solution View → 105

Which of the following facilitates opening of stomatal aperture?

NEET 2017 Solution View → 106

The water potential of pure water is

NEET 2017 Solution View → 107

The water logging capacity of garden soil will be determined by measuring the weight of

NEET 2017 Solution View → 108

Assertion : Translocation of sugar from source (leaf) to sink is defined as pressure flow hypothesis. Reason: Translocation of the solute is facilitated through living phloem sieve

NEET 2017 Solution View → 109

Munch hypothesis is based on

NEET 2017 Solution View → 110

A plasmolysed cell can be deplasmolysed by placing it in

AIIMS 2016 Solution View → 111

A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicate that it is ph

NEET 2016 Solution View → 112

Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening, carbon dioxide diffuses into the plant during photosynthesis. Reason out

NEET 2016 Solution View → 113

A plasmolysed cell can be deplasmolysed by placing it in

NEET 2016 Solution View → 114

A column of water within xylem vessels of tall trees does not break under its weight because of:

NEET 2015 Solution View → 115

Root pressure is usually acidic because:

NEET 2015 Solution View → 116

Transpiration and root pressure cause water to rise in plants by:

NEET 2015 Solution View → 117

In a ring girdled plant:

NEET 2015 Solution View → 118

Which one gives the most valid and recent explanation for stomatal movements?

NEET 2015 Solution View → 119

The ruptere and fractionation do not usually occur in water column in vessel/trachieds during the ascent of sap because of

JIPMER 2014 Solution View → 120

The ruptere and fractionation do not usually occur in water column in vessel/trachieds during the ascent of sap because of

NEET 2014 Solution View →

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