Q. Withdrawal of which hormone is the immediate cause of menstruation : Estrogen FSH FSH-RH Progesterone Solution : Correct option : D After ovulation, the pituitary hormones FSH and LH…
Q. If mammalian ovum fails to get fertilized, which one of the following is unlikely ? (a) Estrogen secretion further decreases (b) Progesterone secretion rapidly declines (c) Corpus luteum will…
Q. Which one of the following events is correctly matched with the time period in a normal menstrual cycle? (a) Release of egg: 5th day (b) Endometrium regenerates: 5-10 days…
Q. Which one of the following statements is not true? (a) Tapetum helps in dehiscence of anthers. (b) Exine of pollen grains is made of sporopollenin. (c) Pollen grains of…