(a) Androgens are produced by Sertoli cells. (False) Androgens are produced by Leydig cells found in seminiferous tubules of the testis.
(b) Spermatozoa get nutrition from Sertoli cells. (True)
(c) Leydig cells are found in ovary. (False) Leydig cells are found in the seminiferous tubules of the testis.
(d) Leydig cells synthesise androgens. (True)
(e) Oogenesis takes place in corpus luteum. (False) Oogenesis takes place in the ovary.
(f) Menstrual cycle ceases during pregnancy. (True)
(g) Presence or absence of the hymen is not a reliable indicator of virginity or sexual experience. (True)
What is menstrual cycle? Which hormones regulate menstrual cycle?
Secondary producers are
(a) Herbivores
(b) Producers
(c) Carnivores
(d) None of the above
Define external fertilization. Mention its disadvantages.
Practise drawing various animals and plants.
Thnx for giving us a brillent answersðð
Thnx for giving us a brillent answers... ðð
Name the ovarian hormone that is essential during pregnancy.please tell
Release of high level of progesterone to maintain pregnancy actually inhibits the release of FSH from anterior pituitary which does not allow growth & maturation of ovarian follicles & thus ceases menstrual cycle.
why is menstrual cycle is absent during pregnancy,please tell