1. | Monocot stem | 2. | Monocot root |
3. | Dicot stem | 4. | Dicot root |
Assertion (A): | Xylem and phloem are not called complex tissues in a plant body. |
Reason (R): | They are composed of a single type of cell with similar structures and functions. |
1. | Both (A) and (R) are True and (R) correctly explains (A). |
2. | Both (A) and (R) are True and (R) does not correctly explain (A). |
3. | (A) is True; (R) is False |
4. | Both (A) and (R) are False |
Statement I: | Gymnosperms lack albuminous cells and sieve cells. |
Statement II: | Gymnosperms have sieve tubes and companion cells. |
I: | Photosynthesis |
II: | Storage of food materials |
III: | Secretion and excretion |
Assertion (A): | Vessels are particularly advantageous in environments where rapid water transport is needed, such as in tall trees or in plants growing in warm, sunny environments. |
Reason (R): | Tracheids are less efficient in conducting water due to their smaller diameter and the absence of large openings (perforations) at their ends. |
1. | Both (A) and (R) are True and (R) correctly explains (A) |
2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
3. | (A) is True, (R) is False |
4. | (A) is False, (R) is True |
Statement I: | In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless bulliform cells. |
Statement II: | When the bulliform cells in the leaves have absorbed water and are turgid, the leaf surface is exposed. |
1. | Statement I is correct; Statement II is correct |
2. | Statement I is correct; Statement II is incorrect |
3. | Statement I is incorrect; Statement II is correct |
4. | Statement I is incorrect; Statement II is incorrect |
Assertion(A): | Apical meristems and intercalary meristems are primary meristems. |
Reason (R): | They appear early in life of a plant and contribute to the formation of the primary plant body. |
1. | Both (A) and (R) are True and (R) correctly explains (A). |
2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
3. | (A) is True; (R) is False |
4. | Both (A) and (R) are False |