Identify the correct statements w.r.t self-incompatibility and choose the correct option:
(i) Is a device to prevent inbreeding.
(ii) Provides a biochemical block to self-fertilisation.
(iii) Ensures cross-fertilisation.
(iv) Is governed by pollen-pistil interaction.
(v) Is governed by series of multiple alleles.
(vi) Prevents self-pollen (from the same flower of the same plant) from fertilizing the ovules by inhibiting pollen germination or pollen tube growth in the pistil.
Text Solution
Verified by ExpertsA
Self-incompatibility is a widespread mechanism in flowering plants that prevents inbreeding and promotes outcrossing. The self-incompatibility response is genetically controlled by one or more multi-allelic loci, and relies on a series of complex cellular interactions between the self-incompatible pollen and pistil.
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