Question

Match column I with column II and select the correct option from the codes given.

	Column I		Column II
A.	Fertilisation	(i)	Isthmus of oviduct
B.	Cleavage	(ii)	Later part of oviduct
C.	Morula	(iii)	Cervix
D.	Blastocyst	(iv)	Ampulla of oviduct
E.	Parturition	(v)	Uterine wall

• A. A - (iv), B - (i), C - (ii), D - (iii), E - (v)
• B. A - (ii), B - (i), C - (iv), D - (iii), E - (v)
• C. A - (ii), B - (i), C - (v), D - (iv), E - (iii)
• D. A - (iv), B - (i), C - (ii), D - (v), E - (iii)

Answer 1

The correct option is D A - (iv), B - (i), C - (ii), D - (v), E - (iii)

Fertilization or fusion of the male and female gametes takes place in the ampulla of the oviduct or the fallopian tube at the ampullary-isthmic junction. Cleavage starts as the zygote moves through the isthmus of the oviduct towards the uterus. The morula or the 8-16 cell stage forms as the zygote moves across the later regions of the oviduct or fallopian tube. The blastocyst is formed as the zygote moves further into the uterus. Parturition or the delivery/childbirth happens as a result of the vigorous contraction of the uterus through the cervix.

So, the correct option is 'A - (iv), B - (i), C - (ii), D - (v), E - (iii)'.