Q. Which of the following characters are present in class-Crustacea?
A) Ciphalothorax, gills and appendages
B) Head and thorax, gills and appendages
C) Cephalothorax, book gills and appendages
D) Head and thorax, book gills and appendages
Explanation
Class-Crustacea belongs to sub-phylum-Mandibulata of phylum-Arthropoda. In crustaceans, the head often joined with thorax to form cephalothorax, respiration by gills or body surface and appendages typically biramous.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.