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Self-incompatibility:
a) Provides a biochemical block to self-fertilization.
b) Ensures cross-fertilization.
c) Is governed by pollen-pistil interaction.
d) Is governed by series of multiple alleles.
e) Prevents self pollen (from the same flower or other flowers of the same plant) from fertilizing the ovules inhibiting pollen germination or pollen tube growth in the pistil.
All are correct
a, b & e are correct
a, b & c are correct
None of these are correct
Answers (1)
As we have leant in Self Incompatibility -
- Self-incompatibility or intraspecific incompatibility is a well-designed genetic mechanism by which certain plants recognize and reject their own pollen thus forcing outbreeding.
- It is defined as “the inability of the plant producing functional gametes to set seeds upon self-pollination”.
- Gametophytic self-incompatibility is due to the genotype of pollen, for example, Liliaceae, Solanaceae, Poaceae.
- Sporophytic self-incompatibility is due to the genotype of sporophytic or stigmatic tissues, for example, Brassicaceae.
-Wherein,
Self-incompatibility:
a) Provides a biochemical block to self-fertilization.
b) Ensures cross-fertilization.
c) Is governed by pollen-pistil interaction.
d) Is governed by a series of multiple alleles.
e) Prevents self pollen (from the same flower or other flowers of the same plant) from fertilizing the ovules inhibiting pollen germination or pollen tube growth in the pistil.
Hence, the correct answer is option a.
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