Class 12th Biology 2016 Set2 Outside Delhi Board Paper Solution
Question 25
Explain the events that occur in a graafian follicle at the time of ovulation and thereafter.
Answer
During the mid cycle Leutinizing hormone secretes to its maximum level which induces rupture of Graafian follicle and thereby the release of ovum (ovulation). The ovulation is followed by the luteal phase during which the remaining parts of the Graafian follicle transform as the corpus luteum which secretes large amounts of progesterone which is essential for maintenance of the endometrium. Such an endometrium is necessary for implantation of the fertilised ovum and other events of pregnancy.
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