Assertion : In morula stage, cells divide without increase in size.
Reason : Zona pellucida remains undivided till cleavage is complete.
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
If the Assertion is correct but Reason is incorrect.
If both the Assertion and Reason are incorrect.
Fertilisation of an egg cell it means......
$(1)$ End of process of oogenesis
$(2)$ Induces the completion of the second meiotic division
$(3)$ The corpus luteum degenerates
$(4)$ Signals for maintain progesterone level in blood
$(5)$ Formation of zygote
The acrosome plays important role in
Receptors for sperm binding in mammals are present on :
The attachment of the mammalian blastocyst to the uterine wall is
If $X$ chromosome contained sperm entered in $X$ chromosome contained ovum than ...... is produced