The branch of embryology which concerns with the study of abnormal embryonic development is termed as
Gerantology
Teratology
Embryology
None of the above
Which cell division is found during cleavage
Ejaculation of semen
In eggs which have very thick and resistant membrane e.g., fishes and insects sperm penetrate through a special canal called
Assertion : Senescence is the time when age associated defects are manifested.
Reason : Certain genes may be undergoing sequential switching on and off during one's life.
Coelom is found between the cavity of