Q. Skeletal system in phylum-Arthropoda is
A) Endoskeletal spicules structures
B) Endoskeletal siliceous structures
C) Exoskeletal calcareous covering
D) Exoskeletal chitinous covering
Explanation
Animals of phylum-Arthropoda have an hard, chitinous outer covering, they lack any endoskeletal structures
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.