Question

Write the differences (any four) between the following groups

a) poriferans and coelenterates b) molluscs and arthropods

c) flatworms and roundworms d) aves and mammals​

Answer 1

Answer:

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Answer 2

Explanation:

Arthropods are invertebrates with hard outer shells (exoskeletons), with jointed legs, and with segmented bodies. Since about 75% of all animal species are arthropods, they represent the largest invertebrate group. ... Sponges are the simplest of all animals.