Q1. Which difference differentiates protostomes from the deuterostomes?
a. Nervous system
b. Embryonic development
c. Circulatory system
e) Presence or lack of notochord
Q2. Of the given organisms, which is the most evolutionarily advanced, with a more complicated body structure?
Q3. Clams, snails, sea slugs and octopuses belong to the phylum:
Q4. Most of the animal species are in which phylum?
Q5. The word ‘deuterostome’ signifies to:
a. Having a spiny skin.
b. Having three germ layers.
c. Possessing a notochord.
d. Second embryonic opening becoming the mouth.
e. Coelom forming through outpocketing of the primitive gut.