- 1(current)
Q. No.What is the function of sieve tube?
1. Transport of water and minerals
2. Transport of organic food materials
3. Mechanical support
4. Storage of food
1. Transport of water and minerals
2. Transport of organic food materials
3. Mechanical support
4. Storage of food
Subtopic: Â Vascular Tissue System |
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Since there is no cambium present in monocotyledons they are referred to as
| 1. | Open vascular bundle |
| 2. | Closed vascular bundle |
| 3. | Intermediate vascular bundle |
| 4. | End node vascular bundle |
Subtopic: Â Vascular Tissue System |
 94%
Level 1: 80%+
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| Assertion(A): | Monocotyledonous stems do not possess the ability to form secondary xylem and phloem tissues. |
| Reason(R): | In monocotyledonous stems, cambium is not present. |
| 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: Â Vascular Tissue System |
 94%
Level 1: 80%+
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In which type of vascular bundle arrangement are the xylem and phloem positioned alternately along different radii, and where is this arrangement typically found?
| 1. | Radial; in roots |
| 2. | Conjoint; in leaves |
| 3. | Closed; in stems |
| 4. | Open; in dicotyledonous stems |
Subtopic: Â Vascular Tissue System |
 90%
Level 1: 80%+
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Consider the given two statements:
| Statement A: | Vascular bundles in dicot stem are conjoint, collateral and open. |
| Statement B: | Presence of cambium permits secondary growth in dicot stems. |
| 1. | Statement A is correct; Statement B is correct |
| 2. | Statement A is correct; Statement B is incorrect |
| 3. | Statement A is incorrect; Statement B is correct |
| 4. | Statement A is incorrect; Statement B is incorrect |
Subtopic: Â Vascular Tissue System |
 90%
Level 1: 80%+
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Subtopic: Â Vascular Tissue System |
 89%
Level 1: 80%+
NEET - 2012
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The following diagram depicts the type of vascular bundles found in:
1. Only A and B
2. Only B and C
3. Only A and C
4. Only B and D
| A: | Monocot Roots |
| B: | Monocot Stems |
| C: | Dicot Roots |
| D: | Dicot Stems |
2. Only B and C
3. Only A and C
4. Only B and D
Subtopic: Â Vascular Tissue System |
 81%
Level 1: 80%+
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Which of the following correctly differentiates between the vascular bundles in stems and roots?
| 1. | Stems have radial vascular bundles; roots have conjoint ones. |
| 2. | Stems have open vascular bundles; roots have closed ones. |
| 3. | Stems have xylem and phloem arranged in a ring; roots have scattered vascular bundles. |
| 4. | Stems have conjoint vascular bundles; roots have radial vascular bundles. |
Subtopic: Â Vascular Tissue System |
 80%
Level 1: 80%+
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The cells that help in the rolling of grass leaves during drought or lack of water are
1. Bundle sheath cells
2. Guard cells
3. Bulliform cells
4. Subsidiary cells
1. Bundle sheath cells
2. Guard cells
3. Bulliform cells
4. Subsidiary cells
Subtopic: Â Vascular Tissue System |
 88%
Level 1: 80%+
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- 1(current)
Q. No.
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