Question

Which among the following statements is incorrect about arthropods?

• A. A hard exoskeleton
• B. A water vascular system
• C. Jointed appendages
• D. Molting
• E. Segmented body

Answer 1

The correct option is B A water vascular system

Option A is incorrect as arthropods have the rigid chitinous exoskeleton that covers their complete body. Option E is incorrect as arthropods are characterized by the segmented body. Option C is incorrect as they have paired, jointed appendages to perform different functions. Option D is incorrect as molting is shedding of exoskeleton and development of new one to accommodate the grown arthropods. Water vascular system is the characteristic feature of echinoderms which makes option B correct answer.