Phylum: Arthropoda, its classification and characteristics
largest phylum of animal kingdom. found in every possible habitat of earth. multicellular, triploblastic, bilaterally symmetrical, metamerically segmented, system grade of body organization. jointed appendages for locomotion, food collection and sensory purposes. body externally covered by hard chitinous cuticle. body divided into head, thorax and abdomen. In some head and thorax fused to form cephalothorax. … Read more