Match List-I with List-II.List-IList-II(A) Fertilisation(I) Embryo wi…

The correct answer is Option (2) → A-III, B-I, C-IV, D-II

List-I follows events and structures from ovulation to childbirth; each one is matched with its site, stage, hormone or meaning.

(A) Fertilisation — this matches (III) Ampullary region of the oviduct. The sperms and the ovum both reach the ampullary region of the fallopian tube, and the gametes fuse there.

(B) Morula — this matches (I) Embryo with 8 to 16 blastomeres. The zygote divides by cleavage into blastomeres, and the 8- to 16-celled stage is the morula.

(C) Corpus luteum — this matches (IV) Progesterone. It forms from the ruptured Graafian follicle and secretes large amounts of progesterone.

(D) Parturition — this matches (II) Delivery of the foetus. Vigorous contractions of the uterus at the end of pregnancy push the foetus out.

NCERT Extract:
Menstrual Cycle – “… The ovulation (ovulatory phase) is followed by the luteal phase during which the remaining parts of the Graafian follicle transform as the corpus luteum (Figure 2.9). The corpus luteum secretes large amounts of progesterone which is essential for maintenance of the endometrium.”
Fertilisation and Implantation – “… The ovum released by the ovary is also transported to the ampullary region where fertilisation takes place.”
Fertilisation and Implantation – “… The mitotic division starts as the zygote moves through the isthmus of the oviduct called cleavage towards the uterus (Figure 2.11) and forms 2, 4, 8, 16 daughter cells called blastomeres. The embryo with 8 to 16 blastomeres is called a morula (Figure 2.11e).”
Parturition and Lactation – “The average duration of human pregnancy is about 9 months which is called the gestation period. Vigorous contraction of the uterus at the end of pregnancy causes expulsion/delivery of the foetus. This process of delivery of the foetus (childbirth) is called parturition.”