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The pollen grains represents the:...

The pollen grains represents the:

A

Male gametophyte

B

Female gametophyte

C

Embryo sac

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
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Read the following text and answer the following questions on the basis of the same: A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings. The prominent pollen grain aperture called germ pore is present in

Read the following text and answer the following questions on the basis of the same: A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings. Study of pollen grains is called ...........

Read the following text and answer the following questions on the basis of the same: A typical anther is bilobed. It is a tetragonal structure consisting of four microsporangia. These microsporangia form pollen sac which on maturity gets filled with a pollen grains. Pollen grains represent the male gametophytes, their cell wall is very hard. Pollen grains of many species cause severe allergies which cause various diseases in human beings. Assertion (A) : The innermost layer of microsporangium is called tapetum. Reason (R) : Tapetum nourishes the develop into pollen grains.

GRB PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANTS-NCERT Corner
  1. The anther is a four-sided structure consisting of:

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  2. The microsporangia develop further and become:

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  3. The pollen grains represents the:

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  4. The hard outer layer of pollen grains called exine is made up of:

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  5. Prollen grains are well preserved as fossils because of the presence o...

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  6. Which of the following has been claimed to increase the performance of...

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  7. Pollen grains lose viabiliyt within 30 minutes of their release in:

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  8. Arising from the placenta are the megasporangia, commonly called:

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  9. Opposite the micropylar end, representing the basal part of the ovule ...

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  10. In embryo sac, three cells are grouped together at the micropylar end ...

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  11. The only type of pollination which during pollination brings genetical...

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  12. Hair present on the cob of corn are Or Long filamentous threads pr...

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  13. The condition which prevents both autogamy and geitongamy is:

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  14. Floral rewards providing safe places to lay eggs occur in:

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  15. The central cell of embryo sac after triple fusion becomes:

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  16. The tissue in which cells are filled with reserve food materials and a...

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  17. The mature embryo in angiosperms is:

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  18. In grass family, the cotyledon is called:

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  19. The residual, persistent nucellus is called:

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  20. The wall of the ovary develops into:

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