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

Transport in Plants Class 11 Biology MCQs Questions 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.

Class 11 Biology Chapter 11 Quiz

Class 11 Biology Chapter 11 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Biology Chapter 11 Transport in Plants to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Transport in Plants Class 11 Biology MCQ online test

Q1.	Dry seeds kept in water swell due to
	A.absorption
	B.diffusion
	C.imbibition
	D.none of these

Ans: imbibition
Explanation:
Imbibition is a type of diffusion in which water is absorbed by solids or colloids which leads to increase in volume. This happens in case of dry wood and seeds.

Q2.	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

Ans: B, C and D
Explanation:
Pumps in active transport are proteins that bind molecules to pass them through the membrane.

Q3.	Which of the following is the unit of ψ?
	A.Pascal
	B.Joule
	C.Newton
	D.Electron volt

Ans: Pascal
Explanation:
Psi or ψ is expressed in pressure units e.g. pascals.

Q4.	Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be:
	A.No movement of water
	B.Movement of water from cell B to A
	C.Movement of water from cell A to B
	D.Equilibrium between the two

Ans: Movement of water from cell A to B

Q5.	Which of the following is decreased during increase in humidity in the atmosphere?
	A.Transpiration
	B.Photosynthesis
	C.Respiration
	D.Glycolysis

Ans: Transpiration
Explanation:
With the increase in humidity in atmosphere, rate of transpiration decreases.

Q6.	Ψ_s is always
	A.positive
	B.zero
	C.negative
	D.one

Ans: negative
Explanation:
Ψ_s is always negative.

Q7.	Two types of molecules cross the membrane in the same direction, it is called as
	A.Uniport
	B.Symport
	C.Antiport
	D.Multiport

Ans: Symport
Explanation:
In symport, two types of molecules cross the membrane in the same direction.

Q8.	Diffusion rate is affected by
	A.temperature
	B.membrane permeability
	C.gradient of concentration
	D.all of these

Ans: all of these
Explanation:
Diffusion rate is affected by the gradient of concentration, permeability of the membrane separating them, temperature and pressure.

Q9.	Cells shrink in _________ solution.
	A.isotonic
	B.hypotonic
	C.hypertonic
	D.hypotonic and hypertonic

Ans: hypertonic
Explanation:
In hypertonic solution, external solution is more concentrated as compared to cytoplasm.
Cells shrink in hypertonic solutions.

Q10.	Which of the following is true about diffusion?
	A.There is no expenditure of energy.
	B.Molecules move in Brownian motion.
	C.Substances moves from the region of higher concentration to the region of lower concentration.
	D.Diffusion depends on the type of living system.

Ans: Diffusion depends on the type of living system.
Explanation:
Diffusion is a slow process, it is not dependent on the living systems.

Q11.	Which of the following is true about diffusion?
	A.There is no expenditure of energy.
	B.Molecules move in Brownian motion.
	C.Substances moves from the region of higher concentration to the region of lower concentration.
	D.Diffusion depends on the type of living system.

Ans: Diffusion depends on the type of living system.
Explanation:
Diffusion is a slow process, it is not dependent on the living systems.

Q12.	Water is lost in a liquid state in some plants through hydathodes. These hydathodes
	A.do not show any specificity in opening and closing
	B.remain closed during day
	C.remain closed at night
	D.remain always open

Ans: remain always open

Q13.	If pressure greater than atmospheric pressure is applied to pure water, the water potential
	A.increases
	B.decreases
	C.remains same
	D.atmospheric pressure does not affect water potential

Ans: increases
Explanation:
If a pressure greater than atmospheric pressure is applied to pure water, the water potential increases.

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

Ans: Root hair, cortex, endodermis, pericycle, protoxylem, metaxylem
Explanation:
Water is absorbed from soil by root hair. This is then carried by cortex,then passed to endodermis.
Endodermis passes water to Perivale then to protoxylem and metaxylem.

Q15.	Wilting of a plant results from excessive
	A.respiration
	B.photosynthesis
	C.absorption
	D.transpiration

Ans: 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

Ans: Henry Dixon

Q17.	Diffusion rate is affected by
	A.temperature
	B.membrane permeability
	C.gradient of concentration
	D.all of these

Ans: all of these
Explanation:
Diffusion rate is affected by the gradient of concentration, permeability of the membrane separating them, temperature and pressure.

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

Ans: 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

Ans: B, C and D
Explanation:
Pumps in active transport are proteins that bind molecules to pass them through the membrane.

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