NEET : Multiple Choice Questions : Fertilization and Implantation

 

1. Insemination is process by which 
A. Male release semen from penis.
B. Male inject their sperm into female genital tract.
C. Female transport  egg from ovary to ampulla of oviduct
D. Testes release sperm to rete testes.
Answer : B Explanation

2. The motile sperm cover path for the Fertilization from 
A. Cervix  to  uterus through vagina
B. Vagina to uterus through cervix
C. Cervix to oviduct through uterus
D. Vagina to cervix through oviduct
Answer : C Explanation

3. Consider the following statement and select the correct code :
1. Fertilization takes place in ampullary region of fallopian tube.
2. Fertilisation can  occur if the ovum and sperms are not  transported simultaneously to the ampullary region.
A. Only 1.   B. Only 2
C. Both 1 and 2 
D. Neither 1 nor 2
Answer : A  Explanation

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

A. All the sperm are involved in  process of fertilization.
B. All copulation does not  lead the pregnancy.
C. For implantaion, ovum and sperms must be transported simultaneously
D. Sperm are released in large number to ensure the fertilisation. 
Answer : A Explanation
. 

5.Consider the following statement and select the number of corect statement.

1. During fertilisation, a sperm comes in contact with the Plasma membrane  of the ovum .
B. Entry of sperm induces the change in zona Pellucida and ensure the entry of single sperm
C. Secondary oocyte divide by second meiotic divison and form second polar body and ootid.
D. The lytic enzyme of the acrosome help the sperm to  enter into the cytoplasm of the ovum. 

A. One.     B. Two

C. Three.  D. Four 
Answer : C  Explanation

6. The secretions of the acrosome help the sperm enter into the cytoplasm of the ovum through

A.  Zona Pellucida only 

B.  Plasma membrane only 

C. First  Zona Pellucida than Plasma membrane.

D. First Plasma membrane than Zona Pellucida

Answer : C  Explanation

7. Which one of the following is not induced by the entry of sperm.

A.  Second meiotic divison in secondary oocyte. 

B.  Change in Zona Pellucida to block the entry of additional sperm.

C. Seceretion of acrosome to dissolve the zona pellucida

D. Fusion of sperm and egg to form the zygote

Answer : C Explanation

8. The Mitotic divison in zygote is called

A. Implantation

B. Cleavage

C. Colostrum

D. Blastocyst

Answer : B Explanation

9.  The mitotic division starts in zygote  

A. When Zygote move from oviduct to uterus.

B. When  Zygote is attached with uterus

C.  When Zygote is fomed in ampulla.

D. Immediately after  fusion of sperm and egg.

Answer : A  Explanation

10. The mitotic division in zygote  result the formation of  2, 4, 8, 16 blastomeres. The Morula is the embryo

A. 8 to 16 blastomeres 

B. 2 to 4 blastomeres

C. 4 to 8 blastomeres

D. More than 16 blastomeres

Answer : A  Explanation

11.Where does the morula transforms into blastocyst 

A. Uterus

B. Isthmus

C. Ampulla 

D. Infundibulum

Answer : A Explanation

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

A. The blastomeres that are arranged as outer layer in blastocyst called troohoblast.
B. The mass of cell present inside the blastocyst is called inner  cell mass.
C. Inner cell mass gets differentiated as the embryo. 
D.  The trophoblast layer then gets attached to the myometrium of uterus.

Answer : D Explanation

13. Implantation is attachment of Blastocyst with

A. Perimetrium 

B. Myometrium

C. Endometrium

D. None of the above 

Answer : C Explanation

14 . Consider the following statement and select the correct code :

1. The uterine cells divide rapidly and covers the blastocyst. 

2. The blastocyst becomes embedded in the endometrium of the uterus. 

A. Only  1    

B. Only 2

C. Both 1 and 3

D. Neither 1 nor 2 

Answer : C Explanation

15. Depict the stage that has been given in

Diagram

A. Morula 

B. Gastrula

C. Blastula

D. Blastocyst

Answer : D