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In a fertilised embryo sac, the haploid,...

In a fertilised embryo sac, the haploid, diploid and triploid structures are

A

synergid, zygote and primary endosperm nucleus

B

synergid, antipodal and polar nuclei

C

antipodal, synergid and primary endosperm nucleus

D

synergid, polar nuclei and zygote

Text Solution

Verified by Experts

The correct Answer is:
A
(i) Synergid-haploid ltvrgt (ii) Polar nuclei-haploid
(iii) Antipodal-haploid
(iv)Zygote-diploid
Since, all these cells three cells (synergid, polar nuclei and antipodals are )formed by mitosis from the functional megaspore, they are haploid (n) . Egg cell fertilies with the male gamete to form a diploid zygote.
(v) Primary Endosperm Nucleus (PEN) .
Drimary secondary nucleus fertilises with a haploid male gamete to form a triploid PEN.
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NCERT EXEMPLAR-SEXUAL REPRODUCTION IN FIOWERING PIANTS-Sexual Reproduction In Fiowering Piants
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  2. From among the situations given below, choose the one that prevents bo...

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  3. In a fertilised embryo sac, the haploid, diploid and triploid structur...

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  4. In an embryo sac, the cells that degenerate after fertilisation are

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  5. While planning for an articifical hybridisation programmme involving d...

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  6. In the embryos of a typical dicot and a grass, true homologous structu...

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  7. The phenomenon observed in some plants wherein parts of the sexual ap...

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  8. In a flower, if the megaspore mother cell forms magaspores without und...

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  9. The phenomenon wherein, the ovary develops into a fruit without fertil...

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  10. Name the component cells of the 'egg-apparatus' in an embryo sac.

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  11. Name the part of gynoecium that determines the compatible nature of po...

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  13. Complete the following flow chart

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  14. Indicate the stages where meiosis and mitosis occur (1, 2 or 3 ) in th...

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  15. In the diagram given below, show the path of a pollen tube from the pl...

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  16. Name the parts of pistil which develop into fruit and seeds.

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  17. In a case of polyembryony if an embryo develops from the synergid and ...

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  18. Can an unfertilised, apomictic embryo sac give rise to diploid embryo ...

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  19. The three cells found in a pollen grain when it is shed at 3-celled st...

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  20. What is self-incompatibility ?

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