Q. Which one of the following phyla is correctly matched with its two general characteristics?
A) Arhropoda – Body divided into head, thorax and abdomen and respiration by tracheae
B) Chordate – Notochord at some stage and separate anal and urinary openings to the outside
C) Echinodermata – Pentamerous radial symmetry and mostly internal fertilization
D) Mollusca – Normally oviparous and development through a trochophore or veliger larva
Explanation
Arthropoda is the largest phylum of animal kingdom. Body of Arthropoda is divisible into head, thorax and abdomen, and respiration by tracheoles and spiracles.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.