Question

Arthropods have a characteristic feature of:

• A. Cuticular exoskeleton
• B. Aerial mode of life
• C. Presence of wing venation
• D. Bright coloration

Hint:

Arthropods molt (ecdysis) to grow - shedding their exoskeleton and forming a new larger one.

Answer 1

The Correct Option is A

Step 1: Many arthropods are flightless or aquatic, so an aerial lifestyle is not universal; eliminate (B).
Step 2: Wing venation applies only to winged insects, and coloration varies widely, so eliminate (C) and (D).
Step 3: Every arthropod shares a chitinous, jointed cuticular exoskeleton, the defining phylum-wide feature.
\[ \boxed{\text{Cuticular exoskeleton}} \]