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STD 11 - 2. Biology classification — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 2. Biology classification1 Mark
MCQ
Plasmogamy is fusion of
  • A
    Two haploid cells including their nuclei
  • ✓
    Two haploid cells without nuclear fusion
  • C
    Sperm and egg
  • D
    Sperm and two polar nuclei
✓

Answer

Correct option: B.
Two haploid cells without nuclear fusion
b
(b) It is the first stage of sexual reproduction in which the cytoplasm of two sex cells fuse with each other.

The nuclei of sex cells come close to each other but do not fuse.

Thus the resulting cell becomes binucleate or dikaryon.

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