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Sexual Reproduction in Flowering Plants — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction in Flowering Plants1 Mark
MCQ
Perispermic seed is:
  • A
    Formed by sexual reproduction.
  • B
    Formed by parthenogenesis.
  • C
    The one with remnant of endosperm.
  • ✓
    None of the above.
✓

Answer

Correct option: D.
None of the above.
Perisperm, the nutritive tissue of the seed which originates from the tecrine or nucellus, outside the embryo sac.
It consits mainly of thin$-$walled parenchymatous cells rich in starch or oil, and, together with the endosperm within the embryo$-$sac, constitutes what was formerly known as albumen.
With the exception of some Alismaceas and Orchidaceas, almost all spermaphytes have perisperm in the early stages of the development of the seed; but in 'exalbuminous' seeds it, together with the endosperm, is absorbed before the seed is ripe.

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