The site of embryo implantation is the _____.

(a)

Uterus

(b)

Peritoneal cavity

(c)

Vagina

(d)

Fallopian tube

The foetal membrane that forms the basis of the umbilical cord is _____.

(a)

Allantois

(b)

Amnion

(c)

Chorion

(d)

Yolk sac

The most important hormone in intiating and maintaining lactation after birth is ______.

(a)

Oestrogen

(b)

FSH

(c)

Prolactin

(d)

Oxytocin

Assertion (A): The acrosome of the Sperm cell contains Sperm lysin.
Reason (R): Sperm lysin destroys the deformed Sperm cells.

(a)

R explains A

(b)

A is right R is wrong

(c)

A an R are right R does not explains A

(d)

Both A and R are wrong

_____ are endocrine cells.

(a)

Inhibitin

(b)

Leydig cells

(c)

Oogonia

(d)

Sertoli cells

Ovulation

(1)

Relaxin

Ley dig cell

(2)

progesteron

Sertoli cells

(3)

Inhibin

Corpus luteum

(4)

Testosterone

Placenta

(5)

Leutinising hormone

What is colostrum? Write its significance.

Placenta is an endocrine tissue. Justify

Draw a labeled sketch of a spermatozoan.

Name the Cells noticed in the epithelial layer of Seminiferous tubules.

What is inhibin? State its functions

Mention the importance of the position of the testes in humans.

What is the function of Sertoli cells?

Explain the various phases of the menstrual cycle.

Explain the role of oxytocin and relaxin in parturition and lactation.

Differentiate Spermatogenesis and oogenesis.