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Q. No.
Assertion(A): Most of the water flow in the roots occurs via the apoplast.
Reason(R): The packing of cortical cells offers no resistance to water movement.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Water Absorption |
72%
From NCERT
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Assertion(A): There is pulling of water, molecule by molecule, into the leaf from the xylem.
Reason(R): Evaporation of water through stomata facilitates the movement of water against gravity.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Evaporation of water through stomata facilitates the movement of water against gravity.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Transpiration & Guttation |
From NCERT
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Assertion(A): The direction of movement in the phloem can be upwards or downwards.
Reason(R): The source will always be leaf and the sink will be other plant parts.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): The source will always be leaf and the sink will be other plant parts.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Phloem Translocation: Short Distance Transport | Phloem Translocation |
71%
From NCERT
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Assertion(A): Minerals are absorbed actively.
Reason(R): The concentration of minerals in the soil is usually lower than the concentration of minerals in the root.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): The concentration of minerals in the soil is usually lower than the concentration of minerals in the root.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Photosynthesis Transpiration Compromise & Mineral Translocation |
77%
From NCERT
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Assertion(A): Water minerals and food can be moved within the body of a plant by diffusion alone.
Reason(R): Translocation of nutrients and food in a tree occurs by a mass flow system.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Translocation of nutrients and food in a tree occurs by a mass flow system.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Phloem Translocation |
74%
From NCERT
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Assertion (A): Positive pressure theory is best explanation for translocation in phloem.
Reason (R): The net gain of ATP produced during aerobic, anaerobic and HMP are 36, 2, and 35 respectively
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): The net gain of ATP produced during aerobic, anaerobic and HMP are 36, 2, and 35 respectively
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
64%
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Assertion (A): Guard cells of stomata are having thick and elastic cell wall.
Reason (R): Elastic wall is due to radial arrangement of cellulose microfibrils.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Elastic wall is due to radial arrangement of cellulose microfibrils.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Transpiration & Guttation |
64%
From NCERT
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Under what conditions guttation is most likely to take place?
| Root pressure | Rate of transpiration | |
| 1. | High | Low |
| 2. | Low | High |
| 3. | Low | Low |
| 4. | High | High |
Subtopic: Transpiration & Guttation |
79%
From NCERT
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Two protein molecules move passively in opposite directions and independently of each other across a cell membrane. The transport is known as:
1. Uniport
2. Symport
3. Co-transport
4. Antiport
1. Uniport
2. Symport
3. Co-transport
4. Antiport
Subtopic: Means of Transport: Passive |
83%
From NCERT
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Which means of transport is very important to plants since it is the only means for gaseous movement within the plant body?
| 1. | Diffusion |
| 2. | Facilitated diffusion |
| 3. | Active transport |
| 4. | Secondary active co-transport |
Subtopic: Diffusion |
87%
From NCERT
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