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.
Related questions
Parthenocarpy refers to:In the fruit, the OVARY WALL develops into the:In a typical dicot embryo, the number of cotyledons is:In double fertilisation, the second male gamete fuses with:Pollination by INSECTS is called:Pollination is best defined as the transfer of pollen from:The mature embryo sac (female gametophyte) in flowering plants typically has:Microsporogenesis (pollen formation) is initiated when: