Cu ions released from copper- releasing Intra Uterine Devices $(IUDs)$
Make uterus unsuitable for implantation
Increase phagocytosis of sperms
Suppress sperm motility
Prevent of ovulation
In Pheretima mouth develops from which of the following
Embryologists can presume the future organs of the embryo in
The eggs in which fate of every part of the egg becomes fixed are called
In the development of man which structures are formed from splanchnopleure.
The chemical substance found in the surface layer of cytoplasm of spermatozoa is