[] (a) 2
[] (b) 4
[] (b) 6
[] (b) 8

Question 2: Which of the following has stages arranged in the sequence in which they occur ?

[] (a) bipinnaria - -> blastula - - > fetus
[] (b) egg - -> gastrula - - > morula
[] (c) gastrula - -> blastula - - > morula
[] (d) zygote - -> morula - - > blastula

Question 3: The image is that of : [] (a) a blastula [] (b) an egg [] (c) a morula [] (d) a zygote

Question 4: The large and small arrows in the image above point respectively to :

[] (a) archenteron - - coelom
[] (b) blastopore - - primitive streak
[] (c) fertilization membrane  - - sperm
[] (d) nucleus  - - nucleolus

Question 5: Which germ layer gives rise to muscles ?

[] (a) ectoderm
[] (b) endoderm
[] (c) mesoderm

Question 6: At gastrulation cells move from the outside to the inside at the :

[] (a) archenteron
[] (b) blastopore
[] (c) coelom
[] (d) zona pellucida

Question 7: The image shows : [] (a) Gastrula [] (b) Late blastula [] (c) Morula [] (d) 64-Cell stage

Question 8:

The region near the label "VP" later will develop into ?

[] (a) an eye
[] (b) opening of the digestive tract
[] (c) the placenta
[] (d) ventricles of the heart

Question 9: Which structures is (are) visible in this chick embryo ? [] (a) brain [] (b) eye [] (c) heart [] (d) somites [] (e) all of the above

Question 10: The age of the chick embryo shown above is:

[] (a) 24 hrs
[] (b) 33 hrs
[] (c) 48 hrs
[] (d) 56 hrs

Name :

E-mail :

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Modified from scripts from Oyston Associates!

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Department of Anaesthesia,
OSMH, 170 Colborne St West,
Orillia, ON,
Canada L3V 2Z3

Prepared by: Dr John Oyston, March 14, 1997.

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