- 1(current)
Q. No.Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
In light of the above statement, choose the most appropriate answer from the options given below:
| Assertion (A): | Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus. |
| Reason (R): | The presence of more than one nucleus in the tapetum increases the efficiency of nourishing the developing microspore mother cells. |
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Subtopic: Stamen: Microsporangium |
Level 4: Below 35%
NEET - 2025
Please attempt this question first.
Hints
Please attempt this question first.
In which of the following sets of families, the pollen grain are viable for months?
1. Solanaceae, Poaceae and Liliaceae
2. Brassicaceae, Liliaceae and Poaceae
3. Rosaceae, Liliaceae and Poaceae
4. Leguminosae, Solanaceae and Rosaceae
1. Solanaceae, Poaceae and Liliaceae
2. Brassicaceae, Liliaceae and Poaceae
3. Rosaceae, Liliaceae and Poaceae
4. Leguminosae, Solanaceae and Rosaceae
Subtopic: Stamen: Microsporangium | Stamen: Male Gametophyte |
84%
Level 1: 80%+
NEET - 2023
Hints
Which one of the following statements is correct?
1. Sporogenous tissue is haploid
2. Endothecium produces the microspores
3. Tapetum nourishes the developing pollen
4. Hard outer layer of pollen is called intine
Subtopic: Stamen: Microsporangium |
92%
Level 1: 80%+
AIPMT - 2013
Hints
In a flowering plant, archesporium gives rise to:
1. Only the wall of the sporangium
2. Both wall and the sporogenous cells
3. Wall and the tapetum
4. Only tapetum and sporogenous cells
Subtopic: Stamen: Microsporangium |
60%
Level 2: 60%+
AIPMT - 2003
Hints
In grasses what happens in microspore mother cell for the formation of mature pollen grains:
1. One meiotic and two mitotic divisions
2. One meiotic & one mitotic division
3. One meiotic division
4. One mitotic division
Subtopic: Stamen: Microsporangium |
Level 4: Below 35%
AIPMT - 2001
Hints
- 1(current)
Q. No.
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