Question

Which of the following is correct about all arthropods?

• A. Have a body comprised of pores.
• B. Breath through spiracles that lead to the tracheal tubes.
• C. Have a hard, calcium-rich shell with a soft mantle.
• D. Have radial symmetry.
• E. Have jointed appendages and exoskeleton.

Answer 1

The correct option is E Have jointed appendages and exoskeleton.

Phylum Arthropoda includes organisms with bilateral aymmetry and they are metamerically segmented body. Arthropoda is characterized by the following feature:

(1) They possess a chitinous exoskeleton which undergoes periodic moulting.

(2) Each segment typically bears a pair of jointed appendages used for locomotion or feeding or sensory purposes.

Thus, the correct answer is option E.