Following are four statements find out correct statements

(i) Microsporangia has four layers, outer three are protective and inner one is nutritive

(ii) Each cell of sporogenous tissue within micorsporangia is capable of giving raise to a microspore tetrad.

(iii) Dehydration of anther is important for seperation of pollen grains in a tetrad.

(iv) Generative cell in pollen grain is small with respect to vegetative cell and it floats in cytoplasm of vegetative cell.

Options

1. All are correct

2. Only (i), (ii) and (iii) is correct

3. Except (ii) all are correct

4. Expect (iii) all are correct.

Subtopic:  Stamen: Microsporangium | Stamen: Male Gametophyte |
 72%
From NCERT
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In a cereal grain, the single cotyledon of the embryo is represented by:

1. coleorhiza

2. scutellum

3. prophyll

4. coleoptiles

Subtopic:  Embryo |
 88%
From NCERT
AIPMT - 2006
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In some plants, the female gamete develops into an embryo without fertilization. This phenomenon is known as:

1. Parthenogenesis 2. Autogamy
3. Parthenocarpy 4. Syngamy

Subtopic:  Fruit |
 63%
NEET - 2019
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What is the fate of the male gametes discharged in the synergid?

1. One fuses with the egg and the other fuses with central cell nuclei
2. One fuses with the egg and the other(s) degenerate(s) in the synergid
3. All fuse with the egg
4. One fuses with the egg and the other(s) fuse(s) with a synergid nucleus

Subtopic:  Double Fertilization |
 87%
From NCERT
NEET - 2019
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Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?

1. Ovules develop into an embryo sac

2. Ovary develops into fruit

3. Zygote develops into an embryo

4. Central cell develops into endosperm

Subtopic:  Pistil: Female Gametophyte |
 79%
From NCERT
NEET - 2019
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The pollen grain represents

1. Male gamete

2. Male gametophyte

3. Microsporophyll

4. Microsporangium

Subtopic:  Stamen: Male Gametophyte |
 81%
From NCERT
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Choose the correct option with respect to the function of the germ pore.

1. It allows growth of pollen tube

2. It allows water absorption in seed

3. It helps dehiscence of pollen grain

4. More than one option is correct

Subtopic:  Pollination & Outbreeding Devices |
 51%
From NCERT
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The number of mitotic generations required to form a mature embryo sac from megaspore in most of the flowering plants is

1. One 

2. Two 

3. Three

4. Four

Subtopic:  Pistil: Female Gametophyte |
 73%
From NCERT
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Hydrophily is limited to 30 genera which are mostly

1. Gymnosperms

2. Monocots

3. Dicots

4. More than one option is correct

Subtopic:  Pollination & Outbreeding Devices |
 75%
From NCERT
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Pollen pistil interaction is

1. Chemically mediated process

2. Dynamic process

3. Genetically controlled process

4. More than one option is correct

Subtopic:  Pollen - Pistil Interaction |
 68%
From NCERT
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