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Q. No.Given below are two statements:
Assertion (A):
Transport in xylem and phloem is unidirectional and multidirectional, respectively.
Reason (R):
In a flowering plant there is complex traffic of compounds moving in different directions.
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: Phloem Translocation |
60%
From NCERT
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Given below are two statements:
| Assertion (A): | It is the only means for gaseous movement within the plant body. |
| Reason (R): | Diffusion is very important to plants. |
| 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: Diffusion |
53%
From NCERT
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Given below are two statements:
| Assertion (A): | Water is often the limiting factor for plant growth and productivity. |
| Reason (R): | Plants have low demand of water. |
| 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: Plant Water Relations: Water Potential: 2 |
72%
From NCERT
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Given below are two statements:
| Assertion (A): | Pure water has maximum water potential. |
| Reason (R): | The greater the concentration of water in a system, the greater is its water potential. |
| 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: Plant Water Relations: Water Potential: DPD |
65%
From NCERT
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Given below are two statements:
| Assertion (A): | All solutions have a lower water potential than pure water. |
| Reason (R): | The concentration of water in a solution is less than pure water. |
| 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: Water Potential Concept |
74%
From NCERT
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Given below are two statements:
| Assertion (A): | Cell wall is not barrier to movement of small molecules. |
| Reason (R): | Cell wall is freely permeable to water and other substances in a solution. |
| 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: Osmosis |
74%
From NCERT
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Given below are two statements:
| Assertion (A): | Plant cell does not rupture in a hypotonic solution. |
| Reason (R): | Plant cell is surrounded by a rigid cell wall. |
| 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: Plasmolysis |
76%
From NCERT
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Given below are two statements:
| Assertion (A): | Imbibition is a type of diffusion. |
| Reason (R): | In imbibition, movement of water is along the concentration gradient. |
| 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: Imbibition |
77%
From NCERT
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Given below are two statements:
| Assertion (A): | Seeds can easily absorb water by imbibition. |
| Reason (R): | Seeds have no water & imbibition takes place against the concentration gradient. |
| 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: Imbibition |
From NCERT
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Given below are two statements:
| Assertion (A): | The movement of water in the symplastic pathway is relatively slower. |
| Reason (R): | During symplastic movement, the water travels through the cytoplasm of the cell and enter the cells through the cell membrane. |
| 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: Water Absorption |
85%
From NCERT
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