Transport in Plants MCQ for NEET:
Candidates who wish to prepare for the NCERT board exam and for the NEET exam can prepare better using our MCQ Questions for Class 11 Biology Chapter 11 Transport in Plants with Answers. From here candidates can download the Transport in Plants MCQ for NEET in Pdf format. These will help aspirants to be familiar with an online examination. Along with that, due to the regular practice of these transport in plants NEET MCQ, candidates will get to know their strengths and weak topics in the Transport in Plant Chapter.
Transport in Plants NEET MCQ :
1. Stomatal movement is not affected by____________
(1) Temperature
(2) Light
(3) O2 concentration
(4) CO2 concentration
Answer: 3
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2. Which of the following facilitates opening of stomatal aperture ?
(1) Decrease in turgidity of guard cells
(2) Radial orientation of cellulose microfibrils in the cell wall of guard cells
(3) Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells
(4) Contraction of outer wall of guard cells
Answer: 2
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3. The water potential of pure water is_________
(1) Less than zero
(2) More than zero but less than one
(3) More than one
(4) Zero
Answer: 4
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4. 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 the above statements using one of the following option :
(1) Both processes cannot happen simultaneously.
(2) Both processes can happen together because the diffusion coefficient of water and CO2 is different.
(3) The above processes happen only during night time.
(4) One process occurs during day time, and the other at night.
Answer: 2
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5. Specialised epidermal cells surrounding the guard cells are called__________
(1) Complementary cells
(2) Subsidiary cells
(3) Bulliform cells
(4) Lenticels
Answer: 2
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6. 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 indicates that it is phloem sap ?
(1) Low refractive index
(2) Absence of sugar
(3) Acidic
(4) Alkaline
Answer: 4
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7. The rate of absorpuon of water is slow at temperature freezing point because_______
(1) It is mainl a metabolic process
(2) Cell mbrane becomes more viscous
(3) Growth of cells stops
(4) Transpiration is retarded
Answer : 2
8. The phenomenon of uptake of water at the expense of energy by the cell and usually against the osmotic gradient is known as__________
(1) Active absorption
(2) Imbibition
(3) Osmosis
(4) Passive absorption
Answer: 1
9. Which of the following criteria does not pertain to facillitated transport ?
(1) Uphill transport
(2) Requirement of special membrane proteins
(3) High selectivity
(4) Transport saturation
Answer: 3
10. The translocation of organic solutes in sieve tube members is supported by__________
(1) Mass flow involving a carrier and ATP
(2) Cytoplasmic streaming
(3) Root pressure and transpiration pull
(4) P-proteins
Answer: 1
11. 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__________
(1) Equilibrium betwee the two
(2) Movement of water from cell A to B
(3) Movement of water from cell B to A
(4) No movement of water
Answer: 2
12. 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 meterial ?
(a) Easily translocated
(b) Chemically non-reactive
(c) Easily digested by animals
(d) Osmotically inacitve
(e) Synthesized during photosynthesis
The useful properties are________
(1) (a), (c) and (e)
(2) (a) and (e)
(2) (b) and (c)
(4) (b) and (d)
Answer: 4
13. Guard cells help in_______
(1) Transpiration
(2) Guttation
(3) Fighting against infection
(4) Protection against grazing
Answer: 1
14. The immediate cause of the opening and closing of stomata is :-
(1) Change in turgidity of guard cells
(2) Flaccidity of guard cell
(3) Orientation of microfibrills
(4) Turgidity of subsidiary cells
Answer: 1
15. Facilitated diffusion can not cause net transport of molecules from a low to a high concentration. because :-
(1) This would require output of energy
(2) This would require input of energy
(3) Both (1) and (2)
(4) None of these
Answer: 2
16. Over small distances substances move by__________
(1) diffusion
(2) cytoplasmic streaming
(3) Mass flow
(4) both (1) and (2)
Answer: 4
17. Pumps are not associated with_______
(1) Uphill transport
(2) Transport from low concentration to high concentration
(3) Direct or indirect ATP consumption
(4) Non selective nature
Answer: 4
18. Root pressure is responsible for__________
(1) transpiration and guttation
(2) exudation and imbibition
(3) exudation and guttation
(4) transpiration and imbibition
Answer: 3
19. Xylem is not associated with translocation of__________
(1) Water
(2) Minerals
(3) Organic nitrogen
(4) Photosynthates
Answer: 4
20. Cohesion, Adhesion & surface tension physical properties of water, provide which of the following properties (Characteristics) in water column ?
(1) Transpiration pull & Tensile strength
(2) Tensile strength and capillarity
(3) Capillarity & tranpiration pull
(4) All the above
Answer: 2
21. The osmotic expansion of a cell kept in water is chiefly regulated by______
(1) Mitochondria
(2) Vacuoles
(3) Plastids
(4) Ribosomes
Answer: 2
22. In a ring girdled plant________
(1) The root dies first
(2) The shoot and root die together
(3) Neither root nor shoot will die
(4) The shoot dies first
Answer: 1
23. Transpiration and root pressure cause water to rise in plants by______
(1) Pulling and pushing it, respectively
(2) Pushing it upward
(3) Pushing and pulling it, respectively
(4) Pushing it upward
Answer: 1
24. Which of the following factors does not affect the rate of simple diffusion?
(1) The permeability of the membrane
(2) The number of transport proteins in the membrane
(3) The gradient of concentration
(4) Temperature and pressure
Answer: 2
25. Which of the following statements is not correct?
(1) Most accepted mechanism for water movement up a plant is cohesion-tension- transpiration pull model
(2) Root pressure play a major role in water movement up tall trees because it provides a strong push in the overall process of water transport
(3) The flow of water upward through the xylem in plants achieve fairly high rate upto 15 metres per hour
(4) Effect of root pressure can be observed during the process of exudation and guttation
Answer: 2
26. Root pressure develops due to ________
(1) Increase in transpiration
(2) Active absorption
(3) Low osmotic potential in soil
(4) Passive absorption
Answer: 2
27. A column of water within xylem vessels of tall trees does not break under its weight because of_________
(1) Positive root pressure
(2) Dissolved sugars in water
(3) Tensile strength of water
(4) Lignification of xylem vessels
Answer: 3
28. If OP = TP then cell will be_______
(1) Flaccid
(2) Turgid
(3) Fully turgid
(4) Plasmolysed
Answer: 3
29. What will be the effects on open stomata, if relative humidity is 100% in the atmosphere?
(1) Completely open
(2) Partially open
(3) May close or open
(4) Closed
Answer: 1
30. Transpiration is completely absent in_________
(1) Xerophytes
(2) Mesophytes
(3) Submerged hydrophytes
(4) Succulents at night
Answer: 3
31. Which of the following is correct regarding apoplast pathway of water?
(1) Movement of water occurs through the intercellular spaces and the walls of the cells
(2) Movement of water is dependent on the gradient
(3) Water movement is through mass flow
(4) All of the above
Answer: 4
32. The physical properties of water like cohesion, adhesion and surface tension give water which of the following ability that help in ascent of xylem sap?
(1) Ability to rise in thin tubes
(2) Ability to resist a pulling force
(3) Both (1) and (2)
(4) High viscous nature
Answer: 3
33. Which of the following is the correct statement?
(1) Facilitated transport and active transport both are sensitive to inhibitors
(2) Facilitated transport and simple diffusion both do not require ATP energy
(3) Both facilitated transport and active trasnport are highly selective
(4) All the above
Answer: 4
34. Significance of transpiration lies in__________
(1) Circulation of water
(2) Absorption and distribution of water
(3) Regulating the temperature of the plant body
(4) All of the above
Answer: 4
35. In the mechanism of opening of stomata, the important factor is_______
(1) Turgidity of the guard cells
(2) Chlorophyll content of the guard cells
(3) Hormone content of the subsidiary cells
(4) Protein content of the epidermal cells
Answer: 1
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