After a sperm has penetrated an ovum in the process of fertilization, entry of further sperms is prevented by
After a sperm has penetrated an ovum in the process of fertilization, entry of further sperms is prevented by
- A
Development of the vitelline membrane
- B
Development of the pigment coat
- C
Condensation of yolk
- D
Formation of fertilization membrane
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$A$ : Blastocyst undergoes gastrulation to produce the three germinal layers.
$R$ : This involves cell movements (morphogenetic movement) that eventually help to attain new shape and morphology of embryo
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$R$ : This involves cell movements (morphogenetic movement) that eventually help to attain new shape and morphology of embryo
Function of allantois in mammal is
Function of allantois in mammal is
- [AIIMS 1984]
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