Question

Choose the correct answers from the alternatives given.
An arachnid differs from a crustacean because:

• A. arachnids lack antennae
• B. arachnids are mostly aquatic and crustaceans are mostly terrestrial
• C. only arachnids shed their exoskeletons
• D. only arachnids have two major body segments of cephalothorax and abdomen

Answer 1

The correct option is A arachnids lack antennae

Crustaceans and Arachnida are classes of Phylum Arthropoda. Crustaceans have 2 pairs of antennae but in arachnids they are absent.

So the correct answer is "arachnids lack antennae".