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During formation of pollen grains, a mi...

During formation of pollen grains, a microspore mother cell undergoes

A

three meiotic division

B

one mitotic devision

C

one meiotic and one mitotic division

D

one meiotic and two mitotic divisions

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The correct Answer is:
D
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Assertion : In a microsporangium, the tapetal cells possess tittle cytoplasm and generally have a single prominent nucleus. Reason : During microsporogenesis, the microspore mother cells (M M Cs) undergo mitotic divisions to produce hapliod microspore tetrads.

During megasporogenesis, potential megaspore mother cell undergoes following cell divisions to form gametophyte female

How many pollen grains are formed from 10 microspore mother cells by meiosis

Process of formation of microspore from microspore mother cell is known as

(I) The formation of microspore from microspore mother cells by meiosis is called ........a ....... (II) Formation of megaspore from megaspore mother cell by meiosis is called .......b........... (III ) The formation of male gamete from generative cell by mitosis is called ...........c....... (IV ) The formation of a zygote by the fusion of male and female gametes is called ......... d......... Write correct terms for a, b, c and d.

The exine of pollen grains (microspores) is composed of

ARIHANT NEET-SEXUAL REPRODUCTION IN FLOWERING PLANTS -ASORTED QUESTIONS
  1. Pollen grains are able to tolerate extremes of temperature and desicca...

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  2. Cross pollination is preferred over self pollinationn because it

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  3. During formation of pollen grains, a microspore mother cell undergoes

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  4. In a type of apomixis known as adventure embryony embryos develop dire...

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  5. Formation of more than four spores in a tetrad known as polyspory is f...

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  6. A particular species of plant produces light, non-sticky pollen in lar...

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  7. A seed that lacks endosperm. It may be

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  8. Which of these following are related with embryo sac? Oenothera type...

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  9. In microporangium, microspore tetrad are formed due to

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  10. The Ubish bodies are involved in

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  11. The hydrophilous flowers, pollinated completely under water, are known...

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  12. Pollen grains of a flower fall on the stigma of another flowers of sam...

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  13. Allogamy is very useful because it results in the

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  14. In a typical complete, bisexual and hypogynous flower the arrangement ...

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  15. When the body of the ovule lies at right angles to the funicle and the...

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  16. The most exceptional feature of zoophilous flowers is

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  17. Flower with a feathery and sticky stigma, numerous light pollen, reduc...

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  18. Choose the correct match.

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  19. Wall of a pollen sac consists of

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  20. Tapetum is

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