Chapter 19 - Growth and Development - 2

Chapter 19 - Growth and Development - 2

1. At the cephalic end of Primitive streak, closely packed cells form a local thickening known as:

a) Somatic mesoderm
b) Hensen’s node
c) Splanchnic mesoderm
d) Gastrocoele

2. The cavity formed between somatic and splanchnic mesoderm is:

a) Neurocoel
b) Gastrocoele
c) Coelom
d) Primitive streak

3. In 24 hours embryo, the floding of neural is clearly visible in:

a) Neurula
b) Gastrula
c) Morulla
d) Blastula

4. Spemann divided the zygote of _______ into two equal halves with the help of minute ligature of human hair:

a) Frog
b) Fish
c) Salamandar
d) Sheep

5. Epiblast and hypoblast are two layers of _______ during gastrulation:

a) Gastrula
b) Morulla
c) Blastoderm
d) Neurula

6. Larval Epidermins is produced by:

a) Clear cytoplasm
b) Yellow cytoplasm
c) Gray vegetal eytoplasm
d) Gray equatorial cytoplasm

7. The size of Acctabularia may be upto several centimeters, though it has:

a) One nucleus
b) Many nuclei
c) Two nuclei
d) No nucleus

8. This alga has a long stalk with an umbrella shaped cap at its top and Rhizoid, attached to the ground

a) Spirogyra
b) Euglena
c) Chlamydomonas
d) Acetabularia

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