Largest amongst the following would be:
1. spermatid
2. mature egg cell
3. polar body
4. secondary spermatocyte
Identify the source of testosterone in males:
1. seminiferous tubules
2. epididymis
3. Sertoli cells
4. Leydig cells
To inhibit ovulation, the corpus luteum secretes:
1. inhibin
2. activin
3. estrogen
4. progesterone
The rudimentary alimentary cavity of an embryo at the gastrula stage is called:
1. vegetal pole
2. primitive streak
3. archenteron
4. blastocoel
Notochord develops from embryonic:
1. ectoderm
2. mesoderm
3. endoderm
4. archenteron
In humans, the majority of the placenta is formed by:
1. allantois
2. amnion
3. chorion
4. yolk sac
Human lungs develop from embryonic:
1. ectoderm
2. endoderm
3. epiderm
4. mesoderm
Human nervous system is derived from embryonic:
1. ectoderm
2. endoderm
3. epiderm
4. mesoderm
Inhibin in males or females decrease the secretion of:
1. FSH
2. LH
3. GnRH
4. Sex steroids
Identify the correct statement regarding the onset of puberty amongst the following:
1. LH is the first hormone to demonstrate an increased secretion
2. GnRH secretion decreases
3. spermatogenesis in males in stopped
4. secretion of sex steroids decreases