- 1(current)
Q. No.From the statements given below, choose the option that is true for a typical female gametophyte of a flowering plant:
| I: | It is 8-nucleate and 7-celled at maturity |
| II: | It is free-nuclear during the development |
| III: | It is situated inside the integument but outside the nucellus |
| IV: | It has an egg apparatus situated at the chalazal end |
| 1. | I and IV | 2. | II and III |
| 3. | I and II | 4. | II and IV |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
83%
Level 1: 80%+
Hints
If an anther is to stamen, similarly an embryo sac is to:
| 1. | Microspore | 2. | Ovule |
| 3. | Ovary | 4. | Gynoecium |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
55%
Level 3: 35%-60%
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Which cells in the embryosac of angiosperms degenerate after fertilization?
1. Antipodal and primary endosperm cell
2. Synergids and primary endosperm cell
3. Synergids and antipodals
4. Egg and antipodals
1. Antipodal and primary endosperm cell
2. Synergids and primary endosperm cell
3. Synergids and antipodals
4. Egg and antipodals
Subtopic: Pistil: Female Gametophyte |
92%
Level 1: 80%+
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If an unreduced megaspore were to develop into an embryo sac, the nuclei within such an embryo sac would be:
| 1. | Haploid |
| 2. | Diploid |
| 3. | A few haploid and a few diploid |
| 4. | With varying ploidy |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
64%
Level 2: 60%+
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Consider the given two statements:
| Assertion (A): | In majority of the flowering plants, the method of embryo sac formation is called as monosporic development. |
| Reason (R): | In majority of the flowering plants, one of the megaspores is functional while the other three degenerate. |
| 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 |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
86%
Level 1: 80%+
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- 1(current)
Q. No.
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