NEET : Multiple Choice Questions : Oogenesis

1.Which one of the following statement is correct.
A. The Process of oogenesis  is similar to the spermatgenesis.
B. About 60,000 primary oogonia are formed after the birth of female .
C. Óogenesis starts at the at time of puberty with remarkable seceretion of GnRH.
D. During the embryonic development stage when a couple of million gamete mother cells are formed within each fetal ovary.
Answer : D Explanation

2. Which one of the following statement is not correct.

A. Oogenesis is initiated during the embryonic development stage when  million of oogonia are formed within each fetal ovary.  
B. oogenesis is  different from spermatogenesis. 
C. no more oogonia are formed and added after birth.
D. None of the above
Answer : D Explanation

3. Ooginia start  mitosis division and form primary oocyte which is arrested temporary at

A. Prophase-I of the meiotic division
B. Prophase  of Mitotic divison
C. Anaphase-I of the meiotic division
D. Anaphase  of Mitotic divison
Answer : A Explanation

4. At the time of puberty, Primary oocyte are converted into primary follicle when Primary oocyte develops

A. Theca
B. Granulosa layer

C. Antrum.

D. Corpus luteum

Answer : A  Explanation

5.Match the list: 

     (Follicle)          (Structure)  A.Primary      1. Antrum

B.Secondary  2. Theca

C.Tertiary.  3.Granulosa cell  D.Mature       4. Graafian 

       A     B    C    D

A.    1     2     3    4

B.    3     2     1    4

C.    3     1     2    4

D.    1    3     2    4

Answer : Explanation

6. How many primary follicles are left in each ovary at the time of puberty.
A. 10000 to 20000
B. 60000 to 80000
C. 30000 to 40000
D. 6000 to 8000
Answer : B Explanation

7. Which of the following statements is not correct.

A. No follicles are  degenerate during the phase from birth to puberty.

B.The primary follicles get surrounded by more layers of granulosa cells and a new theca and are called secondary follicles.

C. The secondary follicle soon transforms into a tertiary follicle which has a fluid filled cavity.

D. The theca layer is organised into an inner theca interna and an outer theca externa.
Answer : A  Explanation

8. Antrum is a fluid cavity present in

A. Primary follicle
B. Secondary follicle
C. Tertiary follicle
D. Graafian follicle
Answer : C. Explanation

9.The primary Oocyte grows in size and completes its first meiotic division and form secondary oocyte and first polar body during the development of  
A. Secondary follicle
B. Tertiary follicle
C. Mature follicle 
D. Graafian follicle
Answer : C Explanation

10. Which of the following statement is not correct.
A. The formation of a large haploid secondary oocyte and first polar body  is a equal divison.
B. Secondary oocyte retains the bulk cytoplasm of the primary oocyte
C. It is not sure about the first polar body, it is developed or degenerate.
D. The secondary oocyte forms a new membrane called zona pellucida

Answer: A Explanation

11. The tertiary follicle further changes into the mature follicle or Graafian follicle which rupture and release 

A. Ovum 
B. Secondary oocyte 
C. Ovum or egg
D. Ovum or secondary oocyte
Answer : D Explanation

12. During the oogenesis, secondary oocyte complete its second division and form 

A. Ovum and second polar body
B. Ovum only 
C. Second Polar body 
D. Ovum, Second polar body and ootid

Answer : A Explanation

13. Secondary oocyte divides by  second meiotic divison and form ovum and polar body when
A. Sperm enters into oviduct.
B. Graafian follicle mature.
C. Tertiary follicle convert into mature follicle.
D. Rapid secretion of LH at mid of menstrual cycle.

Answer : A  Explanation

14. Consider the following process of oogenesis Oogonia - Primary oocyte - Secondary oocyte - Ovum

Which one of the following statements is incorrect.

A. Polar bodies are formed along with Secondary oocyte and ovum.
B. Primary and secondary oocyte both divides by Meiosis. 
C. Oogonia and ovum are haploid. 
D. Primary oocyte is haploid and Secondary oocyte is diploid.
Answer : C Explanation

15. How many statements is/are correct.

1.Oogenesis is started at the embryonic devlopment and ends  after the entry of sperm.
2. Primary oocyte complete first meiotic divison and form secondary oocyte before the maturation  of Graafian follicle.
3. Secondary oocyte is release after rupturing of Graafian foiiicle and reach the ampulla. 
4. Oogonia and primary ooctyle both are diploid. 
A. One.    B. Two 
C. Three  D. Four

Answer : D Explanation

16. During oogenesis, polar body are formed along with
A . Oogonia and Primary oocyte
B. Secondary oocyte and ovum
C. Primary and secondary oocyte
D. Oogonia and ovum
Answer : B  Explanation

17. Oogonia - A - primary oocyte - Meiotic division - Secondary oocyte - B -   ovum.

Identify the word in place of A and B

A. Mitosis and Mitosis

B. Mitosis and Meiosis

C. Meiosis and Mitosis

D. Meiosis and Meiosis 

Answer : B Explanation

18. During oogenesis, Polar bodies are formed in

A. Ovary and infundibulum of oviduct
B. Ovary and ampulla of oviduct
C. Ovary only 
D. Ampulla of Oviduct
Answer  : B Explanation