Multiple choice questions XXXI — task. Science CBSE, Class 9.

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1. Identify the two phyla that exhibit radial symmetry?

Echinodermata and coelenterata
Molluscs, Chordates
Annelids and Arthropods
Amphibians and Reptiles

2. Amphibians do not possess an exoskeleton as their _______________.

skin is thick and dry and acts as a respiratory organ
skin is thin and moist and acts as a circulatory organ
skin is thick and dry and acts as a circulatory organ
skin is thin and moist and acts as a respiratory organ

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