Trophoblast, is not involved in the formation of
Protective and trophic membranes
Foetal portion of placenta
Body of developing embryo
Chorionic vill
Which cell organelle is absent in human sperm?
The human sperms were first seen and discovered by
Which of the following provides nutrition to sperm?
Seminal plasma in humans is rich in
Two major entities seen in human testis $\mathrm{TS}$ are