Function of Cells in the Seminiferous Tubules

Q.

Are spermatogonia germ cells?

Q.

Arrange the following events of spermatogenesis:

i. The spermatogonia give rise to 4 primary spermatocytes (2n)

ii. The spermatogonia divide mitotically to maintain the germ cells (2n)

iii. Spermiogenesis

iv. Each primary spermatocyte gives rise to 2 secondary spermatocytes (n)

1. iii, ii, i, iv

2. iii, i, ii, iv

3. ii, i, iv, iii

4. ii, iii, i, iv

Q.

__ cells in the testes produce the male hormone testosterone.

1. FSH
2. GH
3. prolactin
4. LH

Q.

In the given cross section of the seminiferous tubules, which of the labelled cells produce testosterone?

1. (i) and (iii)

2. (iv)

3. (ii) and (iii)

4. (iii)

Q.

At what age does spermatogenesis end?

Q. Testes do not produce

1. Testosterone
2. Fructose
3. Oestradiol
4. Inhibin

Q.

Testosterone is produced in testes by

1. Sertoli cells

2. Spermatocytes

3. Spermatogonia

4. Leydig cells

Q.

___ is the enzyme that facilitates the entry of sperms into the egg.

1. make uterus unsuitable for implantation
2. suppress sperm motility
3. increase phagocytosis of sperms
4. prevent ovulation

Q.

The Leydig cells are found in the human body are the secretory source of:

1. Progesterone

2. Glucagon

3. Androgens

4. Intestinal mucus

Q.

What is the function of the seminiferous tubules?

Q.

The packing cells between the coils of seminiferous tubules are better known as ___

1. Germ cells

2. Sperm cells

3. Interstitial cells

4. Leydig cells

Q.

The gonadotropin releasing hormone (GnRH) released by the _____(i)_____stimulates the ___(ii)______ to release ___(iii)______ and _____(iv)______. The _____(iii)____ stimulates the leydig cells to produce____(v)______. The ____(iv)___ stimulates the sertoli cells to secrete substances important for sperm development.

1. (i) pituitary, (ii) hypothalamus, (iii) LH, (iv) FSH, (v) testosterone

2. (i) hypothalamus, (ii) pituitary, (iii) LH, (iv) FSH, (v) testosterone

3. (i) hypothalamus, (ii) pituitary, (iii) FSH, (iv) LH, (v) testosterone

4. (i) hypothalamus, (ii) pituitary, (iii) LH, (iv) testosterone, (v) FSH

Q. Sandhya made an observation about general body shapes in male and female. According to her, females have a 'pear-shaped' body due to more fat deposition around thighs and hips, whereas, males have an 'apple-shaped' body due to more fat deposition around abdomen. Which of the following is the main reason for the difference in fat deposition?

1. Muscle tissue distribution
2. Areolar tissue distribution
3. Adipose tissue distribution
4. Epithelial tissue distribution

Q.

Copper ions released from copper-releasing Intrauterine device (IUDs) -

1. Prevent ovulation

2. Make uterus unsuitable for implantation

3. Increase phagocytosis of sperms

4. Suppress sperm motility

Q.

Copper ions released from copper-releasing Intrauterine Devices (IUDs) :

1. prevent ovulation
2. prevent menstrual cycle
3. prevent spermatogenesis
4. suppress sperm motility

Q.

Write the function of-
Leydig cells

Q.

Testosterone is produced by

1. Cells of Malpighi

2. Sertoli cells

3. Spermatogonial cells

4. Leydig cells

Q. Testosterone is produced in testes by

1. Sertoli cells
2. Leydig cells
3. Sperrmatocyte
4. Spermatogonia

Q.

In the given cross section of the seminiferous tubules, which of the labelled cells produce testosterone?

1. (iii)

2. (i) and (iii)

3. (iv)

4. (ii) and (iii)

Q.

During spermatogenesis which of the following is the first cell to become haploid?

1. Spermatid

2. Spermatogonia

3. Secondary spermatocyte

4. Primary spermatocyte

Q.

Testosterone is produced by

1. Cells of Malpighi

2. Sertoli cells

3. Spermatagonial cells

4. Cells of leydig

Q.

Fill the missing value:

$Length\times breadth=area$

$6m\times \_\_\_\_\_\_=48squaremeters$

Q.

Name the following:

The cells of the testes that produce male hormones.

Q.

The Leydig cells are found in the human body are the secretory source of:

1. Glucagon

2. Androgens

3. Progesterone

4. Intestinal mucus

Q. What is spermiogenesis?

1. Spermiogenesis is the sequence of events that leads to the production of spermatids.
2. Spermiogenesis is the conversion of spermatids to spermatozoa.
3. Spermiogenesis is another name for the process of puberty.
4. Spermiogenesis is the reabsorbing of sperms that are not ejaculated.

Q. The process of sperm production takes place in the

1. Epididymis
2. Prostate gland
3. Vas deferens
4. Seminiferous tubules