Multiple choice

When genotype of haploid pollen and diploid pistil determine incompatibility, it is known as

  1. gametophytic self-incompatibility

  2. sporophytic self-incompatibility

  3. heteromorphic self-incompatibility

  4. homomorphic self-incompatibility
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A Correct answer
Explanation

Gametophytic self-incompatibility is determined by the haploid genotype of the pollen (gametophyte), whereas sporophytic incompatibility is determined by the diploid genotype of the parent plant (sporophyte). In gametophytic systems, the pollen's own genes control compatibility.

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