While comparing invertebrate groups, a prawn has biramous appendages and two pairs of sensory antennae. The feature being tested is:

Crustaceans typically have two pairs of antennae and many possess biramous appendages. They are mostly aquatic arthropods, although some groups are terrestrial. This MCQ belongs to the Crustacea topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.