Question. Crustaceans and insects have what special structures?
Options:
- (A) the eyes
- (B) a cuticle
- (C) internal
- (D) excretory
- (E) invisible
- (F) Chlorophyll
- (G) fur and fat
- (H) muscled
Answer. (D)
What step-by-step reasoning justifies that answer?
Reasoning: Some arthropods have special excretory structures. Crustaceans are, like insects, arthropods. Crustaceans and insects have special excretory structures.