Read the following passage and answer the next five questions: The reproductive cycle of female primates is called menstrual cycle. Menstrual cycle starts only after attaining sexual maturation (puberty). Generally, during ovulation only one ovum is released per menstrual cycle. The cyclical changes in the ovary and the uterus during menstrual cycle are induced by changes in the levels of pituitary and ovarian hormones. After coitus, sperms are transported to the junction of the isthmus and ampulla, where the sperm fertilises the ovum leading to formation of a diploid zygote. |
Match List-I with List-II:
Choose the correct answer from the options given below: |
(A)-(II), (B)-(IV), (C)-(III), (D) -(I) (A)-(III), (B)-(II), (C)-(I), (D) - (IV) (A)-(IV), (B)-(III), (C)-(II), (D) - (I) (A)-(II), (B)-(IV), (C)-(I), (D)-(III) |
(A)-(IV), (B)-(III), (C)-(II), (D) - (I) |
The correct answer is Option (3) → (A)-(IV), (B)-(III), (C)-(II), (D) - (I)
A. Proliferative phase (IV): This phase occurs from the 5th to the 13th day of the cycle.The menstrual phase is followed by the follicular phase. During this phase, the primary follicles in the ovary grow to become a fully mature Graafian follicle and simultaneously the endometrium of uterus regenerates through proliferation. C. Secretory phase (II): This phase occurs from the 15th to the 28th/29th day, after ovulation, where the endometrium becomes more glandular and prepares for potential implantation of a fertilized egg. D. Ovulatory phase (I): This occurs around the 14th day of the cycle, when the mature egg is released from the ovary, ready for fertilization. Diagrammatic presentation of various events during a menstrual cycle |