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Microsporogenesis

Difference an...

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Difference and common thing about gametophytic and sporophytic incompatibility

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What is self incompatibility in gametophyte and sporophyte ?

Q. Assertion :Self-incompatibility is a genetic mechanism which prevents self-pollination and thereby fertilisation by inhibiting either pollen germination or pollen tube growth in the pistil. Reason: In gametophytic self-incompatibility, the incompatibility reaction is determined by the genotype of the sporophytic tissue of the plant from which the pollen is derived.

Q. Assertion: Self-incompatibility is a genetic mechanism that prevents self-pollen from the same flower or other flowers of the same plant from fertilizing the ovules by inhibiting pollen germination or pollen tube growth in the pistil.
Reason: In gametophytic self-incompatibility, the incompatibility is determined by the genotype of the sporophytic tissue of the plant from which the pollen is derived.

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Diploid sporophytic

Haploid gametophytic

Q. Gametophytic and sporophytic phases are independent in

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