Process of Spermatogenesis

Q. The seminiferous tubules are lined by

1. Columnar epithelium
2. Glandular epithelium
3. Squamous epithelium
4. Germinal epithelium

Q.

How many sperms are produced in spermatogenesis?

Q.

The immature male germ cell undergoes division to produce sperms by the process of spermatogenesis. Choose the correct statement with reference to above.

1. Spermatogonia have 46 chromosomes and always undergo meiotic cell division

2. Primary spermatocytes divide by mitotic cell division

3. Spermatozoa are transformed into spermatids

4. Secondary spermatocytes have 23 chromosomes and undergo second meiotic division

Q.

Are spermatids diploid or haploid?

Q.

What is the correct sequence of differentiation stages in sperm formation?

1. Spermatogonia, Spermatozoa, Spermatocytes, Spermatids

2. Spermatogonia, Spermatocytes, Spermatids, Spermatozoa

3. Spermatids, Spermatocytes, Spermatogonia, Spermatozoa

4. Spermatogonia, Spermatocytes, Spermatozoa, Spermatids

Q.

Question 11
The number of chromosomes in parents and offsprings of a particular species remains constant due to

(a) doubling of chromosomes after zygote formation
(b) halving of chromosomes during gamete formation
(c) doubling of chromosomes after gamete formation
(d) halving of chromosomes after gamete formation

Q. Sort the stages of differentiation in the order they appear during spermatogenesis.

1. Spermatocytes
2. Spermatozoa
3. Spermatogonia
4. Spermatid

Q.

Which of the following is the correct order of spermatogenesis?

1. Meiosis, Mitotic proliferation, Packaging

2. Packaging, Mitotic proliferation, Meiosis

3. Mitotic proliferation, Meiosis, Packaging

4. Only Meiosis and Packaging

Q. The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is:

1. Spermatogonia - spermatid - spermatocyte - sperms
2. Spermatocyte - spermatogonia - spermatid - sperms
3. Spermatogonia - spermatocyte - spermatid - sperms
4. Spermatid - spermatocyte - spermatogonia - sperms

Q. How many sperms are formed by 4 primary spermatocytes?

1. 32
2. 4
3. 16
4. 1

Q. Statement 1: Each spermatogonium is diploid and contains 46 chromosomes.
Statement 2: Some spermatogonia, primary spermatocytes complete the meiotic division to form four haploid cells.

1. Statement 1 is incorrect but statement 2 is correct
2. Both statements are correct
3. Both statements are incorrect
4. Statement 1 is correct but statement 2 is incorrect

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. ii, i, iv, iii

2. iii, ii, i, iv

3. ii, iii, i, iv

4. iii, i, ii, iv

Q. In humans, at the end of the first meiotic division, the male germ cells differentiate into the

1. spermatids
2. spermatogonia
3. primary spermatocytes
4. secondary spermatocytes

Q.

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

1. Primary spermatocyte

2. Secondary spermatocyte

3. Spermatid

4. Spermatogonia

Q. Select the structure that is responsible for the temporary storage of urine.

1. 
2. 
3. 
4.