Question

The second greatest number of species in an animal phylum is found in
a. nematodes.
b. mollusks.
c. platyhelminths.
d. echinoderms.
e. cnidarians.

Answer 1

Answer: B mollusks

Explanation: Mollusca is the second largest phylum of invertebrate animals. The members are known as molluscs or mollusks. Around 85,000 extant species of molluscs are recognized.