Question

If mammalian ovum fails to get fertilized, which one of the following is incorrect?

• A. Corpus luteum will disintegrate
• B. Primary follicle starts developing
  
• C. Estrogen secretion further decreases
  
• D. Progesterone secretion rapidly declines

Answer 1

The correct option is C Estrogen secretion further decreases

If the mammalian ovum fails to fertilise choices, (a) and (b) are obvious. As, corpus luteum declines so Progesterone also decreases rapidly (progesterone is essential for maintenance of pregnancy). Also, oestrogen continues to cause the growth of the endometrium which ultimately becomes thick enough to break down and cause menstruation. Hence, choice (c) is incorrect as oestrogen secretion does not decrease further. Primary follicles continue developing irrespective of ovulatory condition.

So, the correct answer is option C.