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Q. No.Active transport involves all of the following except the
1. diffusion of solute through the lipid bilayer of a membrane.
2. pumping of solutes across the membrane.
3. hydrolysis of ATP.
4. transport of solute against a concentration gradient.
Subtopic: Means of Transport: Active |
65%
Level 2: 60%+
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A: Waxy and cutin coating on plant parts reduce the transpiration.
R: These adaptation are found in xerophytes.
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
3. If Assertion is true statement but Reason is false, then mark (3)
4. If both Assertion and Reason are false statements, then mark (4)
R: These adaptation are found in xerophytes.
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
3. If Assertion is true statement but Reason is false, then mark (3)
4. If both Assertion and Reason are false statements, then mark (4)
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Subtopic: Transpiration & Guttation |
Level 3: 35%-60%
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Given below are two statements
Statement I: The greater is the concentration of water in a system, lower is its kinetic energy or water potential
Statement II: Pure water will have the lowest water potential
In light of the above statements, choose the most appropriate answer from the options given below
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Statement I: The greater is the concentration of water in a system, lower is its kinetic energy or water potential
Statement II: Pure water will have the lowest water potential
In light of the above statements, choose the most appropriate answer from the options given below
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Subtopic: Water Potential Concept |
69%
Level 2: 60%+
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Given below are two statements:
Statement I: Exudation of water droplets on the tips and edges of plant leaves is called guttation. It is caused by root pressure that forces more water to enter leaves than is transpired
Statement II: Transpiration is a 'pulling' process, hence exploration of the rise of xylem sap by cohesion-tension mechanism begins not with roots but with leaves, where the driving force for transpirational pull begins
In light of the above statements, choose the most appropriate answer from the options given below
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Statement I: Exudation of water droplets on the tips and edges of plant leaves is called guttation. It is caused by root pressure that forces more water to enter leaves than is transpired
Statement II: Transpiration is a 'pulling' process, hence exploration of the rise of xylem sap by cohesion-tension mechanism begins not with roots but with leaves, where the driving force for transpirational pull begins
In light of the above statements, choose the most appropriate answer from the options given below
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Subtopic: Transpiration & Guttation |
73%
Level 2: 60%+
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Select the order of the flow of water in the roots.
A. Cortex
B. Pericycle
C. Xylem
D. Epidermis
E. Endodermis
Chose the correct answer from the options given below
1. D → E → A → B → C
2. D → A → B → E → C
3. A → B → D → C → E
4. D → A → E → B → C
A. Cortex
B. Pericycle
C. Xylem
D. Epidermis
E. Endodermis
Chose the correct answer from the options given below
1. D → E → A → B → C
2. D → A → B → E → C
3. A → B → D → C → E
4. D → A → E → B → C
Subtopic: Pathways of transport |
69%
Level 2: 60%+
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If you place a plant cell/tissue in a solution and plant cell shrinks from its cell wall, then what is indicated?
1. Solution is hypotonic
2. Solution is Isotonic
3. Solution is hypertonic
4. None of the above
1. Solution is hypotonic
2. Solution is Isotonic
3. Solution is hypertonic
4. None of the above
Subtopic: Plasmolysis |
83%
Level 1: 80%+
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The occurrence of which of the following events lead to the opening of stomata?
A. Lowering of osmotic potential of guard cells
B. Guard cells becoming flaccid
C. Decline in guard cell solutes
D. Rise in potassium levels in guard cells
E. Movement of water from neighboring cells into guard cells
Choose the correct answer from the options given below:
1. A, B and D only
2. B, C and D only
3. B, C and E only
4. A, D and E only
A. Lowering of osmotic potential of guard cells
B. Guard cells becoming flaccid
C. Decline in guard cell solutes
D. Rise in potassium levels in guard cells
E. Movement of water from neighboring cells into guard cells
Choose the correct answer from the options given below:
1. A, B and D only
2. B, C and D only
3. B, C and E only
4. A, D and E only
Subtopic: Stomata |
61%
Level 2: 60%+
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In an experiment, you measure the concentration of a polar molecule inside and outside the cell and find that the concentration of this molecule is gradually increasing inside the cell. You also measure the concentration of ATP inside the cell and find that it is dropping. Which of the following processes are you likely to be observing?
1. Active transport
2. Facilitated diffusion
3. Osmosis
4. Passive transport
1. Active transport
2. Facilitated diffusion
3. Osmosis
4. Passive transport
Subtopic: Means of Transport: Active |
77%
Level 2: 60%+
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Select all routes possible for the transport of water and minerals from root hair to the xylem:
A. Transmembrane route
B. Symplastic route
C. Apoplastic route
D. Stomatal route
E. Endodermis route
Choose the correct answer from the options given below:
1. A, B, C and E only
2. B, C, D and E only
3. A, B, C and D only
4. A, B, D and E only
A. Transmembrane route
B. Symplastic route
C. Apoplastic route
D. Stomatal route
E. Endodermis route
Choose the correct answer from the options given below:
1. A, B, C and E only
2. B, C, D and E only
3. A, B, C and D only
4. A, B, D and E only
Subtopic: Water Absorption | Pathways of transport |
71%
Level 2: 60%+
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Please attempt this question first.
Consider the given two statements:
I. Over small distances, in plants, substances move by diffusion and by cytoplasmic streaming supplemented by active transport.
II. Transport over long distances, in plants, proceeds through the vascular system and is called as transpiration.
1. Only I is correct
2. Only I is incorrect
3. Both I and II are correct
4. Both I and II are incorrect
I. Over small distances, in plants, substances move by diffusion and by cytoplasmic streaming supplemented by active transport.
II. Transport over long distances, in plants, proceeds through the vascular system and is called as transpiration.
1. Only I is correct
2. Only I is incorrect
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Water Absorption | Transpiration & Guttation | Pathways of transport | Introduction to Water Absorption |
55%
Level 3: 35%-60%
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