Transport in Plants Exam Questions Class 11 Biology

Please see Chapter 11 Transport in Plants Exam Questions Class 11 Biology below. These important questions with solutions have been prepared based on the latest examination guidelines and syllabus issued by CBSE, NCERT, and KVS. We have provided Class 11 Biology Exam Questions and answers for all chapters in your NCERT Book for Class 11 Biology. These solved problems for Plant Kingdom in Class 11 Biology will help you to score more marks in upcoming examinations.

Exam Questions Chapter 11 Transport in Plants Class 11 Biology

Objective Type Questions

Question. Transport of organic and inorganic materials is
(a) Unidirectional
(b) Multidirectional
(c) Bidirectional
(d) First unidirectional then bidirectional

Question. Go through the following points regarding diffusion
A. It is a passive and slow process
B. It is an active and fast process
C. It needs ATP
D. It does not need energy
E. It occurs against the concentration gradient
F. Molecules move in a random manner, the net result being substances moving higher Concentration to region of lower concentration
Options :
(a) A, C and E are correct
(b) B and E are correct
(c) All are correct except C
(d) All are correct except B, C and E

Question. Facilitated diffusion
(a) Needs a carrier protein
(b) Is an active process
(c) occurs against the concentration gradient
(d) Needs ATP

Question. Which does not affect the rate of diffusion of a substance?
(a) Temperature and concentration gradient
(b) Electrical charges of the diffusing materials
(c) Presence of the other substances in the solution
(d) Molecular diameter of the diffusing materials

Question. An analysis of the xylem exudates indicated that
A. Some of the inorganic nitrogen travel in the organic form as amino acids and related organic compounds, much of it is carried as inorganic ions
B. Small amount of P and S are carried as organic compounds
Options :
(a) Both A and B are correct
(b) Both A and B are incorrect
(c) Only A is correct
(d) Only B is correct

Question. Osmosis is a specific form of
(a) Active transport
(b) Secondary active transport
(c) Facilitated diffusion
(d) Diffusion

Question. Which of the following is correct about facilitated and Active transport?
(a) Both need energy
(b) Both need no ATP
(c) Both use carbohydrates to move the molecules across the membrane
(d) Both need carrier proteins which are sensitive to inhibitors that react with protein side chains

Question. Which one is highly selective?
(a) Simple diffusion and Active transport
(b) Active transport and facilitated diffusion
(c) Simple diffusion and facilitated diffusion
(d) Active transport and passive transport

Question. Which statement about the membrane channel is not true ?
(a) They are proteins
(b) Movement through them is along the concentration gradient
(c) There are pores in the membrane
(d) All ions pass through the same type of channel

Question. You are monitoring the diffusion of a colored molecule across a membrane. Which of the following will result in the fastest rate of diffusion?
(a) An internal concentration of 5% and an external concentration of 60%
(b) An internal concentration of 35% and an external concentration of 40%
(c) An internal concentration of 60% and an external concentration of 5%
(d) (a) and (c) are correct

Question. The rate of facilitated diffusion of a molecule does not continue to increase as concentration difference of molecules across the membrane increases. Why?
(a) Facilitated diffusion needs the use of ATP
(b) The transport protein must be of the channel type
(c) As the concentration difference increases molecules interfere with one another
(d) The transport must be of carrier type

Question. Go through the following statements
A. In active transport, pumps are proteins that use energy for transportation of molecules against the concentration gradient
B. Carrier protein is very specific
C. Transport rate reaches a maximum when all the active protein transporters are used and saturated
Options :
(a) All are correct
(b) None is correct
(c) A and C are correct
(d) B and C are correct

Question. Which of the following is not true of the carrier molecules involved in facilitated diffusion?
(a) They increase the speed of transport across a membrane
(b) They concentrate solute molecules on one side of the membrane
(c) They have specific binding sites for molecules they transport
(d) Transport proteins may undergo conformational change upon binding of solutes.

Question. Most herbaceous plants have how much dry weight of its total fresh weight?
(a) 92%
(b) 10-15 %
(c) 50%
(d) 29%

Question. When different types of molecules in a fluid move together is response to a pressure gradient, this is called?
(a) Joined resonse
(b) Bulk flow
(c) Facilitated diffusion
(d) Pressure

Question. Water potential is
(a) Equal to solute potential
(b) Equal to pressure potential
(c) Equal to O.P.
(d) A tendency of a solution to take up water from another solution across a membrane

Question. O.P. of pure water is
(a) 0
(b) 1
(c) 10
(d) 100

Question. Water potential
(a) Of a solution is always greater than of pure H₂O
(b) Of a solution is always zero
(c) Of pure water is zero but of solution is always less than zero
(d) Of a solution is always positive

Question. If a pressure greater than atmospheric pressure is applied to pure water and a solution, its Y value
(a) Increases
(b) Decreases
(c) Remains constant
(d) Will be equal to

Question. Now choose the correct option

(a) Kinetic energy(K.E.) H₂O in solution A > K.E. of water in B solution
(b) K.E. of water in B solution > K.E. of water in solution A
(c) K.E. of water in A solution = K.E. of H₂O in B solution
(d) Water potential has nothing to do with K.E. of water in a solution

Question. A plant cell placed in a pure water will
(a) Expand until the osmotic potential or solute potential reaches that of water
(b) Become more turgid until the pressure potential of cell reaches its osmotic potential
(c) Become more turgid until the osmotic potential reaches that of pure water
(d) Becomes less turgid until the osmotic potential reaches that of a pure water

Question. Transport of water through the xylem is
(a) Active, requiring energy expenditure by the soil
(b) Passive requiring no energy expenditure by the plant
(c) Active requiring energy expenditure by plant
(d) Passive unless the soil is very dry

Question. Which one is correct?
(a) Only the net direction of osmosis, not the rate of osmosis depends on both the pressure gradient & concentration gradient
(b) The rate of osmosis depends on only the pressure gradient
(c) The net direction and rate of osmosis do not depend upon pressure gradient and conc. gradient
(d) The net direction and rate of osmosis depend upon both the pressure gradient and conc. gradient

Question. Transpiration facilitates
(a) Transferring minerals to leaves
(b) To maintain turgidity (hence shape and structure of the plant)
(c) Availability of water of photosynthesis
(d) Alla

Question. For a solution/ a cell
(a) ψ_w is negative but ψ_w is positive
(b) ψ_w is negative but ψ_s is negative
(c) Both ψ_w and ψ_s is negative
(d) Both are positive

Question. Choose the correct option for A to B in comparison of different transport mechanisms

A B C D
(a) Yes Yes No Yes
(b) Yes No No Yes
(c) No No No No
(d) Yes No Yes No