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STD 12 - 1. sexual reproduction in flowering plants — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 1. sexual reproduction in flowering plants1 Mark
MCQ
Perisperm differs from endosperm in
  • ✓
    being a diploid tissue
  • B
    its formation by fusion of secondary nucleus with several sperms
  • C
    being a haploid tissue
  • D
    having no reserve food.
✓

Answer

Correct option: A.
being a diploid tissue
a
(a) : Both perisperm and endosperm are nutritive layers. Perisperm is residual persistent nucellus of seed prior to fertilization while endosperm develops when one of the sperm cells fuses with two haploid polar nuclei. Thus perisperm is diploid while endosperm is a triploid tissue.

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