Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 4. Diversity In Living Organism
Phylum - Arthropoda
Phylum - Arthropoda : Body is covered with a thick chitinous covering. Respiration through general body surface, by gills, air tubes (tracheae) or book-lungs. Body segments are grouped into two regions-cephalothorax (head and thorax together and abdomen, or three regions-head, thorax and abdomen. Triploblastic, bilaterally symmetrical and metamerically segmented animals. Each body segment usually bears paired lateral and jointed legs or appendages.