MCQ Questions for Class 11 Biology Chapter 11 Transport in Plants with Answers

MCQ Questions for Class 11 Biology Chapter 11 Transport in Plants with Answers

Check the below NCERT MCQ Questions for Class 11 Biology Chapter 11 Transport in Plants with Answers Pdf free download. MCQ Questions for Class 11 Biology with Answers were prepared based on the latest exam pattern. We have provided Transport in Plants Class 11 Biology MCQs Questions with Answers to help students understand the concept very well.


Q1. Potometer works on the principle of

(a) Root pressure
(b) Amount of water absorbed equals to the amount transpired
(c) Osmotic pressure
(d) Potential difference between the tip of the tube and that of the plant

(b) Amount of water absorbed equals to the amount transpired


Q2. The rate of transpiration of a plant would gradually increase if

(a) Relative humidity decreases
(b) Relative humidity remains unchanged
(c) Relative humidity increases
(d) Water potential gradient remains unchanged

(a) Relative humidity decreases


Q3. The molecules which move from higher to lower regions are called as

(a) Imbibition
(b) Diffusion
(c) Osmosis
(d) Guttation

(b) Diffusion


Q4. Cohesion-tension theory is related to

(a) Transpiration
(b) Respiration
(c) Ascent of sap
(d) Photosynthesis

(c) Ascent of sap


Q5. A concept fundamental to understanding water movement is called

(a) Pressure potential
(b) Water potential
(c) Solute potential
(d) Concentration gradient

(b) Water potential


Q6. In wall of guard cell, cellulose microfibrils are arranged

(a) Transversely
(b) Tangently
(c) Radially
(d) Obliquely

(c) Radially


Q7. Rupture and fractionalization of water column present in treachery elements does not occur during ascent of sap due to

(a) Cohesion and adhesion
(b) Lignified thick walls
(c) Weak gravitational pull
(d) Transpirational pull

(a) Cohesion and adhesion


Q8. Which one of the following will not directly affect transpiration?

(a) Temperature
(b) Chlorophyll content of leaves
(c) Wind speed
(d) Light

(b) Chlorophyll content of leaves


Q9. The system of adjacent cell walls that is continuous throughout the plant is called as

(a) Symplast
(b) Apoplast
(c) Guttation
(d) Root pressure

(b) Apoplast


Q10. Transport over longer distances proceeds through the vascular system

(a) Osmosis
(b) Translocation
(c) Transpiration
(d) Diffusion

(b) Translocation


Q11. Rate of transpiration is highest when

(a) Soil is dry and air is humid
(b) Soil is wet and air is dry
(c) Both soil and air are dry
(d) Soil is wet and air is humid

(b) Soil is wet and air is dry


Q12. Stomata close down if relative humidity of atmosphere falls below

(a) 50%
(b) 70%
(c) 80%
(d) 60%

(a) 50%


Q13. ψp denotes to

(a) Water potential
(b) Negative potential
(c) Pressure potential
(d) Solute potential

(c) Pressure potential


Q14. Choose the correct sequence of water movement in the plants.

(a) Cortex, protoxylem, endodermis, root hair, pericycle, metaxylem
(b) Root hair, cortex, endodermis, pericycle, protoxylem, metaxylem
(c) Root hair, protoxylem, metaxylem, pericycle, cortex, endodermis
(d) Root hair, pericycle, endodermis, cortex, protoxylem, metaxylem

(b) Root hair, cortex, endodermis, pericycle, protoxylem, metaxylem


Q15. Wilting of a plant results from excessive

(a) respiration
(b) photosynthesis
(c) absorption
(d) transpiration

(d) transpiration


Q16. Cohesion theory of water movement in plants was put forth by

(a) Henry Dixon
(b) F. F. Blackman
(c) Melvin cycle
(d) Hans. A. Krebs

(a) Henry Dixon


Q17. Diffusion rate is affected by

(a) temperature
(b) membrane permeability
(c) gradient of concentration
(d) all of these

(d) all of these


Q18. When a plant is girdled (ringed)

(a) the root and shoot die at the same time
(b) the shoot dies first
(c) the root dies first
(d) neither root nor shoot will die

(c) the root dies first



Q19. Choose the correct statement/statements. Pumps in active transport are A. Lipids that bind molecules to pass them through the membrane. B. Transport molecules uphill. C. These are specific transporters. D. These are sensitive to inhibitors.

(a) A and C
(b) A, B and D
(c) B, C and D
(d) C and D

(c) B, C and D


Q20. Assertion (A): K+ ion accumulation found in Nitella depends on its respiratory activity. Reason (R): Absorption of all ions in plants completely depends on the usage of metabolic energy. The correct answer is

(a) A and R are true and R is the correct explanation of A
(b) A and R are true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true

(c) A is true but R is false


Q21. Munch hypothesis is based on

(a) Translocation of food due to turgor pressure gradient and imbibition force
(b) Translocation of organic solutes
(c) Translocation of food due to turgor pressure gradient
(d) Translocation of food due to imbibition force

(c) Translocation of food due to turgor pressure gradient


Q22. In plants, capillarity is aided by the small diameter of

(a) Trachery elements
(b) Cortical cells
(c) Parenchyma cells
(d) Phloem tissue

(a) Trachery elements


MCQ Questions for Class 11 Biology with Answers Chapter Wise


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