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Human Reproduction

Multiple Choice Questions

271.

Fertilization occur in

uterus
ureter
vagina
fallopian tube

272.

Name the hormone that has no role in menstruation

273.

In spermatogenesis, reduction division of chromosome occurs during conversion of

spermatogonia to primary spermatocytes
primary spermatocytes to secondary spermatocytes
secondary spermatocytes to spermatids
spermatids to sperms

274.

Presence of which of the following hormone in the urine confirms pregnancy?

Progesterone
Oestrogen
Human chorionic gonadotropin
Prolactin

275.

A pregnant female delivers a baby, who suffers from stunted growth, mental retardation low intelligence quotient and abnormal skin. This is the result of

deficiency of iodine in diet
low secretion of growth hormone
cancer of the thyroid gland
over secretion of pars distalis

276.
What is the correct sequence of sperm formation?

Spermatid, Spermatocyte, Spermatogonia, Spermatozoa

Spermatogonia, Spermatocyte, Spermatozoa, Spermatid

Spermatogonia, Spermatozoa, Spermatocyte, Spermatid

Spermatogonia, Spermatocyte, Spermatid, Spermatozoa

Spermatogonia, Spermatocyte, Spermatid, Spermatozoa

Spermatogonia $\to$ Spermatocyte $\to$ Spermatid $\to$ Spermatozoa

Spermatogonia are present on the inside wall of seminiferous tubule multiplied by mitotic division and increase in number. Spermatocytes are some of the spermatogonia, which periodically undergo meiosis. The secondary spermatocytes undergo the second meiotic division to produce four, equal haploid spermatids. The spermatids are transformed into spermatozoa (sperm).