Class 11 NEET Biology Animal Kingdom Questions Part 2

(c): Arthropods are the largest phylum of Kingdom Animalia that characteristically possesses an outer body layer - the cuticle. The body is composed of segments usually forming distinct specialized body regions, i.e., head, thorax and abdomen. In them the trachea or windpipe or book lungs are the respiratory organs found in terrestrial forms, which help in respiration.