Arrange the cells according to their positions from the basal layer towards the lumen in the seminiferous tubules:- 1. Spermatogonia 2. Primary spermatocyte 3. Spermatid 4. Spermatozoa
A2,1,3,4
B1,2,3,4
C1,3,2,4
D4,3,2,1
Increased LH secretion just before ovulation is due to
APositive feed-back by FSH
BPositive feed-back by progesterone
CPositive feed-back by relaxin
DPositive feed-back by estrogen
The mechanism of action of emergency contraception includes the following except:
ADegeneration of corpus luteum
BPrevention of implantation of fertilized egg.
CInhibition of fertilization
DBy preventing or delaying ovulation
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