Choose the odd one in each of the following :
(a) Sperm; implantation; fertilisation; ovum; afterbirth.
(b) Relaxin; cervix dilates; amniotic sac ruptures; child birth; follicle.
After birth is odd, because sperm ovum fertilization and implantation, all are included in the processes before birth.
Here the odd one is ‘follicle’ as all other terms are related to the delivery and child birth.