General Science/Basic Science Embryology Fertilization Sample Test,Sample questions

Question:
.The process of fusion of male and female nuclei is known as

1.Amphimixis

2.Apomixis

3.Paramixis

4.Perimixis


Question:
By what process fertilizing molecules causes the clumping of sperms during fertilization

1.Rheotaxis

2.Thigmotaxis

3.Chemotaxis

4.Phototaxis


Question:
During activation which parts of the sperm enter through the fertilization cone

1.Entire sperm

2.Nucleus only

3.Middle piece only

4.Both nucleus and middle piece


Question:
During fertilization polyspermy is prevented by

1.Fertilizing

2.Anti fertilizing

3.Spermlysin

4.Fertilization membrane


Question:
External fertilization is common in

1.Terrestrial animals

2.Aquatic animals

3.Oviparous animals

4.Viviparous animals


Question:
Fertilization cone is formed during the

1.Meeting of the gametes

2.Penetration of the sperm

3.Activation of the egg

4.Amphimixis


Question:
Fertilization cone is formed from the

1.Sperm cytoplasm

2.Egg cytoplasm

3.Sperm nucleus

4.Egg nucleus


Question:
Fertilization membrane is formed form the

1.Cell membrane

2.Cell wall

3.Plasma membrane

4.Vitelline membrane


Question:
Fertilization membrane is formed to

1.Protect the ovum from shock

2.Protect the inclusion of many ova

3.Protect the ovum from radiation

4.Protect polyspermy


Question:
In mammals egg follicular cells are held together by a substance called

1.Malonic acid

2.Malic acid

3.Hyaluronic acid

4.Fumeric acid


Question:
Perivitelline space is formed between

1.Cell wall and vitelline membrane

2.Plasma membrane and vitelline membrane

3.Plasma membrane and fertilization membrane

4.Fertilization membrane and vitelline membrane


Question:
Sperm produces lytic substance called

1.Hyaloplasm

2.Hyaluronidase

3.Hyaluronic acid

4.Hyalonema


Question:
The angle of rotation of the egg in fertilization is

1.180 cel

2.90 cel

3.120 cel

4.360 cel


Question:
The enzymes secreted by the sperm to penetrate the egg membrane is

1.Exopeptidase

2.Succinic dehydrogenase

3.Hyaluronidase

4.Carbonic anhydrase


Question:
The fertilization membrane is formed by

1.The cortex of the cytoplasm

2.The fusion of cortical granules with inner surface of the membrane

3.The fusion of cortical granules with outer surface of the membrane

4.The fusion of inner surface of the membrane with the outer surface of the membrane


Question:
The function of fertilization membrane is to

1.Protect the egg

2.Prevent the entrance of other sperm into ovum

3.Attract the sperm

4.Secrete fertilizing


Question:
The lytic enzymes called hyaluronidase is found in the

1.Amphioxus egg

2.Frog�s egg

3.Reptilian egg

4.Mammalian egg


Question:
The lytic substance produced by sperm to dissolve the egg membrane in mammal is membranes is

1.Enterokinase

2.Hyaluronidase

3.Carbonic anhydrase

4.Lipase


Question:
The membrane which is helpful in avoiding the entry of man poly sperm is

1.Vitelline membrane

2.Perivitelline membrane

3.Fertilization membrane

4.Plasma membrane


Question:
The term amphimixis refers to the5.

1.Mixing of maternal and paternal cytoplasm

2.Joining of cell membranes of sperm and egg

3.Mixing of paternal and maternal chromosomes

4.Fusion of male centriole and female centriole


Question:
Which causes the clumping of sperms over the egg surface

1.Fertilizing

2.Luciferin

3.Anti fertilizing

4.Zymogen


Question:
Which of the following show the external fertilization

1.Fishes

2.Reptiles

3.Birds

4.Mammals


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