NEET Transport in Plants PYQs & Practice Questions

10 free NEET Biology questions on Transport in Plants, starting with previous year questions (2016–2023). Tap “Show answer” to check each one. No login needed.

Topics: Reverse Osmosis · Factors Affecting Transpiration · Guttation · Imbibition · Water Potential of Pure Water · Osmosis and Water Potential · Transpiration and Stomatal Mechanism · Mineral Absorption and Active Transport · Translocation of Organic Solutes (Phloem Transport) · Translocation - Form of Transported Sugar · Active Transport · Transpiration - Cohesion-Tension Theory and Cooling Effect

Q1NEET 2023Active Transport
Movement and accumulation of ions across a membrane against their concentration gradient can be explained by:
- A. Facilitated Diffusion
- B. Passive Transport
- C. Active Transport
- D. Osmosis
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Answer: B — Passive Transport
Active transport uses energy (ATP) to move ions and molecules across a membrane against their concentration gradient, unlike passive transport, facilitated diffusion, or osmosis, which all move substances along their gradient.
Q2NEET 2023Transpiration - Cohesion-Tension Theory and Cooling Effect
Given below are two statements: Statement I: The forces generated by transpiration can lift a xylem-sized column of water over 130 meters height. Statement II: Transpiration cools leaf surfaces sometimes 10 to 15 degrees, by evaporative cooling. In the light of the above statements, choose the most appropriate answer from the options given below.
- A. Both Statement I and Statement II are incorrect.
- B. Statement I is correct but Statement II is incorrect.
- C. Statement I is incorrect but Statement II is correct.
- D. Both Statement I and Statement II are correct.
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Answer: C — Statement I is incorrect but Statement II is correct.
Both statements are correct per the NCERT textbook — the forces generated by transpiration pull (cohesion-tension) can lift water columns over 130 meters, and transpiration provides evaporative cooling that can lower leaf surface temperature by 10 to 15 degrees in some cases.
Q3NEET 2023Water Properties - Cohesion, Adhesion, Surface Tension, Guttation
Match List I with List II: A. Cohesion, B. Adhesion, C. Surface tension, D. Guttation. List II: I. More attraction in liquid phase, II. Mutual attraction among water molecules, III. Water loss in liquid phase, IV. Attraction towards polar surfaces. Choose the correct answer from the options given below.
- A. A-IV, B-III, C-II, D-I
- B. A-III, B-I, C-IV, D-II
- C. A-II, B-I, C-IV, D-III
- D. A-II, B-IV, C-I, D-III
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Answer: C — A-II, B-I, C-IV, D-III
Cohesion is the mutual attraction among water molecules (A-II). Adhesion is attraction of water molecules towards polar surfaces (B-IV). Surface tension results from greater attraction among molecules in the liquid phase than towards the air (C-I). Guttation is the loss of water in the liquid phase from leaf margins (D-III). So the correct match is A-II, B-IV, C-I, D-III.
Q4NEET 2022Girdling Experiment - Phloem Transport
'Girdling Experiment' was performed by Plant Physiologists to identify the plant tissue through which:
- A. water is transported
- B. food is transported
- C. for both water and food transportation
- D. osmosis is observed
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Answer: A — water is transported
The girdling (ringing) experiment involves removing a ring of bark (including phloem) from a tree stem. Since the region above the girdle swells (accumulation of food) while the tree continues to survive (water still moves via xylem), this experiment demonstrated that food is transported through phloem.

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Q5NEET 2022Apoplastic Pathway of Water Movement
Which of the following is not observed during apoplastic pathway?
- A. Movement of water occurs through intercellular spaces and wall of the cells
- B. The movement does not involve crossing of cell membrane
- C. The movement is aided by cytoplasmic streaming
- D. Apoplast is continuous and does not provide any barrier to water movement
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Answer: B — The movement does not involve crossing of cell membrane
Cytoplasmic streaming is associated with the symplastic pathway (movement through cytoplasm via plasmodesmata), not the apoplastic pathway, which involves movement through cell walls and intercellular spaces without crossing membranes or involving cytoplasm.
Q6NEET 2022Water Potential and Solute Concentration
Addition of more solutes in a given solution will:
- A. raise its water potential
- B. lower its water potential
- C. make its water potential zero
- D. not affect the water potential at all
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Answer: A — raise its water potential
Adding solutes to a solution decreases its solute potential, which in turn lowers (makes more negative) the overall water potential of the solution.
Q7NEET 2021Matching - Water Movement Terms
Match List-I with List-II: List-I: (a) Cohesion, (b) Adhesion, (c) Surface tension, (d) Guttation List-II: (i) More attraction in liquid phase, (ii) Mutual attraction among water molecules, (iii) Water loss in liquid phase, (iv) Attraction towards polar surfaces Choose the correct answer from the options given below: (1) a-ii, b-i, c-iv, d-iii (2) a-ii, b-iv, c-i, d-iii (3) a-iv, b-iii, c-ii, d-i (4) a-iii, b-i, c-iv, d-ii
- A. a-ii, b-i, c-iv, d-iii
- B. a-ii, b-iv, c-i, d-iii
- C. a-iv, b-iii, c-ii, d-i
- D. a-iii, b-i, c-iv, d-ii
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Answer: A — a-ii, b-i, c-iv, d-iii
Cohesion = mutual attraction among water molecules (ii); Adhesion = attraction towards polar surfaces (iv); Surface tension = more attraction in liquid phase (i); Guttation = water loss in liquid phase (iii). So a-ii, b-iv, c-i, d-iii.
Q8NEET 2020Guttation and loss of water from leaf tips
The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is:
- A. Transpiration
- B. Root pressure
- C. Imbibition
- D. Plasmolysis
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Answer: A — Transpiration
Guttation, the loss of water in liquid form from leaf tips (especially of grasses), occurs due to root pressure pushing water up through the xylem when transpiration is minimal (at night/early morning).

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Q9NEET 2019Stomatal Movement
Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following:
- A. Shrinkage of air spaces in spongy mesophyll
- B. Xyloses in vessels
- C. Closure of stomata
- D. Flaccidity of bulliform cells
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Answer: C — Closure of stomata
Grass leaves curl inward during dry weather due to flaccidity (loss of turgor) of bulliform cells, which reduces water loss by decreasing the exposed leaf surface area.
Q10NEET 2019Xylem Transport
Xylem translocates:
- A. Water mineral salts and some organic nitrogen only
- B. Water mineral salts some organic nitrogen and hormones
- C. Water only
- D. Water and mineral salts only
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Answer: A — Water mineral salts and some organic nitrogen only
Xylem translocates water, mineral salts, some organic nitrogen compounds, and hormones (like cytokinins synthesized in roots) upward to the shoot system.

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