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Developmental biology

Total questions: 8

Worksheet time: 4mins

Name
Class
Date
1.

The cavity inclosed by blastula of Amphioxus is ------------

a)

Blastocoel

b)

Coelom

c)

Sac

d)

Archenteron

2.

Based on the distribution of yolk,egg of Amphioxus is -------

a)

Megalecithal

b)

Isolecithal

c)

Telolecithal

d)

Centrolecithal

3.

The process of spermatogenesis is completed in three phases ,correct sequence of these phases is -----...

a)

Maturation, multiplication, growth

b)

Multiplication , growth ,maturation

c)

Growth , maturation , multiplication

d)

Multiplication,maturation , growth

4.

In chick embryo,the process of formation of gastrula is due to -----

a)

Emboli

b)

Delamination

c)

Invagination

d)

Epiboly

5.

In chick during development ,the brain is developed from ----

a)

Mesendoderm

b)

Endoderm

c)

Ectoderm

d)

Mesoderm

6.

In Chick,the yolksac is developed from ----------

a)

Somatoplure

b)

Splanoplure

c)

Endoderm

d)

Ectoderm

7.

In chick ,the extraembryonic cavity is developed from ------

a)

Amnion

b)

Chorion

c)

Seroamnion

d)

Allantois

8.

The type of placenta in which the villi are developed in the form of belt is called-----

a)

Discoidal

b)

Metadiscoidal

c)

Cotyledonary

d)

Zonary