Fertilisation in humans is practically feasible only if
the ovum and sperms are transported simultaneously to ampullary-isthmic junction of the cervix
the sperms are transported into cervix within 48 hrs of release of ovum in uterus
the sperms are transported into vagina just after the release of ovum in Fallopian tube
the ovum and sperms are transported simultaneously to ampullary-isthmic junction of the Fallopian tube.
Give scientific reasons : Enzymes are secreted from the cells of trophoblast.
In human female the fertilized eggs gets implanted in uterus
The cleavage is such method of divisions of fertilized egg in which the egg
Blastocyst is a modified blastula of
Assertion : In morula stage, cells divide without increase in size.
Reason : Zona pellucida remains undivided till cleavage is complete.