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 |
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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:  Post Pollination Events |
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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 |
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Persistent nucellus in the seed is known as:

1. Tegmen 2. Chalaza
3. Perisperm 4. Hilum
Subtopic:  Seed |
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In a cereal grain, the single cotyledon of embryo is represented by :

1. coleorhiza

2. scutellum

3. prophyll

4. coleoptiles

Subtopic:  Embryo |
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Which one of the following is resistant to enzyme action?

1.  Cork

2.  Wood fibre

3.  Pollen exine

4.  Leaf cuticle

Subtopic:  Stamen: Male Gametophyte |
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What does the filiform apparatus do at the entrance into ovule?
1. it helps in the entry of pollen tube into the synergid
2. it prevents the entry of more than one pollen tube into the embryo sac
3. it brings about opening of the pollen tube
4. it guides pollen tube from the synergid to the egg

Subtopic:  Pistil: Female Gametophyte |
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Unisexuality of flowers prevents

1.  autogamy, but not geitonogamy

2.  Both geitonogamy and xenogamy

3.  geitonogamy, but not xenogamy

4.  autogamy and geitonogamy

Subtopic:  Pollination & Outbreeding Devices |
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Wind pollinated flowers are –
1. small, brightly coloured, producing large number of pollen grains
2. small, producing large number of dry pollen grains
3. large, producing abundant nectar and pollen
4. small, producing nectar and dry pollen

Subtopic:  Pollination & Outbreeding Devices |
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Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called

1. xenogamy

2. geitonogamy

3. karyogamy

4. autogamy

Subtopic:  Pollination & Outbreeding Devices |
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