Question

Which of the following features is not present in the Phylum Arthropoda?

(a) Parapodia

(b) Jointed appendages

(c) Chitinous exoskeleton

(d) Metameric segmentation

Answer 1

Ans: (a) Parapodia

Sol: Parapodia are flattened, fleshy, vertical flap­ like outgrowths of body wall found in annelids on lateral sides of trunk segments. These are hollow structures enclosing coelom which is continuous with that of trunk segments. These serve the dual purpose of locomotion and respiration.