Process of maturation and development of sperms is called
oogenesis
spermatogenesis
spermiogenesis
None of these
B.
spermatogenesis
Spermatogenesis is the process of the formation of haploid spermatozoa (sperms), from the undifferentiated diploid primordial germ cells of the testes. It involves multiplication phase, growth phase, whereas spermiogenesis is the process of transformation of spermatids - into spermatozoa (sperms) which involves differentiation phase.
Corpus luteum in mammals occurs in
brain and connects two cerebral hemispheres
ovaries and produces progesterone
heart and initiate contraction
skin and acts as a pain receptor
Which of the following embryonic membranes structure is excretory in function?
Amnion
Allantois
Yolk sac
Vitelline chorion
Bartholin's glands are situated
on either side of vagina in humans
on either side ofvas deferens in humans
on the sides of the head of some amphibians
at the reduced tail end of birds
When embryonic development is completed in mother but the embryo not accept nutritent from mother, which is known as
ovoviparous
viviparous
oviparous
All of these
