Self-incompatibility is a:
AHormonal mechanism in seeds
BType of apomixis
CPhysical barrier that prevents pollen entry
DGenetic mechanism that prevents self-pollen from fertilising the ovule by inhibiting pollen germination or pollen-tube growth in the pistil
Answer & Solution
Correct answer: D. Genetic mechanism that prevents self-pollen from fertilising the ovule by inhibiting pollen germination or pollen-tube growth in the pistil
**Self-incompatibility** is a **genetic** mechanism — the pistil recognises self pollen and inhibits its germination or pollen-tube growth, preventing self-fertilisation even though pollen lands on the stigma.
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