Select Chapter Topics:
Q. No.Pollination by bees is called
1. melittophily
2. phalaenophily
3. ornithophily
4. chiropterophily
Subtopic: Pollination & Outbreeding Devices |
Please attempt this question first.
Hints
At the four nucleate stage, the number of cells present in a female gametophyte of a typical angiosperm is:
| 1. | 1 | 2. | 2 |
| 3. | 4 | 4. | 7 |
Subtopic: Pistil: Female Gametophyte |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The first mitotic division of the zygote in angiosperms divides the fertilized egg into a basal cell and a terminal cell where:
| 1. | the basal cell degenerates and the terminal cell gives rise to both the embryo and the suspensor |
| 2. | the terminal cell degenerates and the basal cell gives rise to both the embryo and the suspensor |
| 3. | the terminal cell gives rise to most of the embryo and the basal cell produces the suspensor |
| 4. | the basal cell gives rise to most of the embryo and the terminal cell produces the suspensor |
Subtopic: Double Fertilization |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The number of male gametes required to produce 200 seeds in a typical angiosperm would be:
| 1. | 50 | 2. | 100 |
| 3. | 200 | 4. | 400 |
Subtopic: Double Fertilization |
Please attempt this question first.
Hints
The outer layer of endosperm cells, present in all small grains and retained in many dicots with transient endosperm is called as:
1. Nucellus
2. Helobial endosperm
3. Aleurone
4. Perisperm
1. Nucellus
2. Helobial endosperm
3. Aleurone
4. Perisperm
Subtopic: Endosperm |
52%
Please attempt this question first.
Hints
The plumule of a eudicot seed consists of all of the following except
| 1. | Epicotyl | 2. | Shoot apical meristem |
| 3. | Young leaves | 4. | Hypocotyl |
Subtopic: Seed |
56%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The generative cell of the pollen grain:
1. is larger than the vegetative cell
2. divides by meiosis to produce male gametes
3. is never “free” of the vegetative cell
4. is a syncytium
1. is larger than the vegetative cell
2. divides by meiosis to produce male gametes
3. is never “free” of the vegetative cell
4. is a syncytium
Subtopic: Stamen: Male Gametophyte |
Please attempt this question first.
Hints
Consider the given two statements:
| Statement I: | In over 60 per cent of angiosperms, pollen grains are shed at 2-celled stage. |
| Statement II: | In the remaining species, the vegetative cell divides mitotically to give rise to the two male gametes before pollen grains are shed (3-celled stage). |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Statement I is correct; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Monocarpic & Polycarpic | Stamen: Anther | Stamen: Microsporangium |
55%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
| Assertion (A): | In angiosperms, seed formation is a dependable process of sexual reproduction. |
| Reason (R): | In angiosperms, reproductive processes such as pollination and fertilisation are independent of water. |
| 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 but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Monocarpic & Polycarpic | Seed | FLOWER – A FASCINATING ORGAN OF ANGIOSPERMS |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
| Assertion (A): | Pollen grain exine has prominent apertures called germ pores where sporopollenin is absent. |
| Reason (R): | Germ pore is the structure through which the germ tube or pollen tube makes its exit on germination. |
| 1. | Both (A) and (R) are True and (R) explains (A) |
| 2. | Both (A) and (R) are True and (R) does not explain (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Stamen: Male Gametophyte |
54%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select Chapter Topics:
© 2025 GoodEd Technologies Pvt. Ltd.