Which type of cell division forms spermatids from the secondary spermatocytes?

1

(a)

Meiosis II (similar to mitosis).

What is the difference between a primary oocyte and a secondary oocyte ?

1

(a)

A primary oocyte is diploid,while a secondary oocyte is haploid.

Mention the importance of LH surde during menstrual cucle.

1

(a)

LH surge (maximum level of luteinizing hormone) leads to ovulation,i.e. the rupture of mature Graafian follicle and the consequent release of ovum.

What is the significance of ampullaryisthmic junction in the female reproductive tract?

1

(a)

Ampullary-isthmic junction is the site in the fallopian tube where fertilisation occurs.

Give the names and functions of the hormones involved in the process of spermatogenesis.Write the names of the endocrine glands from where they are released.

1

(a)

Hormone	Endocrine  gland	Function
(i) FSH	Anterior pituitary	Stimulates Sertoli cells to secrete some factors which help in spermatogenesis.
(ii)ICSH/LH	-do-	Stimulates Leydig's cells of testes to secrete androgens (especially testosterone) which regulate spermatogenesis.

Name the germ layer that produces skeleton and muscles.

1

(a)

Mesoderm

Give the name of structures by which testes are suspended in the scrotum.

1

(a)

Spermatic cords.

The path of sperm transport is given below. Provide the missing steps in blanks boxes.

1

(a)

A - Vasa efferentia, B - Vas deferens.

What is the role of cervix in the human female reproductive system?

1

(a)

Cervix helps in regulating the passage into the female uterus. It also forms the birth canal along with vagina to facilitate parturition.

Female reproductive organs and associated functions are given below in column I and column II. Fill in the blank.

Column I	Column II
Ovaries	Ovulation
Oviduct	A
B	Pregnancy
Vagina	Birth

1

(a)

A - Fertilisation
B - Uterus