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STD 12 - 2. human reproduction — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 2. human reproduction1 Mark
MCQ
Which distinguishes a morula from a blastula
  • A
    Presence of more yolk
  • B
    Absence of yolk
  • C
    Presence of a cavity
  • ✓
    Absence of a cavity
✓

Answer

Correct option: D.
Absence of a cavity
d
(d) In microlecithal eggs or alecithal eggs, the cleavage results in the production of closely packed blastomeres.

The stage in which solid mass of blastomeres appears is said to be morula,

whereas blastula is hollow with a cavity known as blastocoel.

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