exoskeleton advantages

Body is radially symmetrical, star shaped, spherical or elongate, Exoskeleton is spin..

This includes the majority of chordates. Head is prominent. Nervous system and exoskeleton are highly developed. Notochord is replaced by a jointed vertebral column. Two pairs of appendages (limbs). Aquatic animals have gills..

Periplaneta americana is one of the several species of cockroaches that inhabit our country. Cockroach is a nocturnal, omnivorous animal. It feeds on any kind of organic matter. Cockroach has a dorso ventrally flat, compressed body which is covered by a hard, chitinous exoskeleton. ..

>Echinoderms are radially symmetrical in the adult stage and bilaterally symmetrical in the larval stages. Chordates are animals with a notochord, a dorsal tubular nerve cord and pharyngeal gill slits. Vertebrates represent a major group of chordates. Vertebrates are characterised by the presence o..

Butterfly This is the largest phylum with almost 80% of the animals kingdom in this phyla. Body is bilaterally symmetrical and segmented. It is divided into head, thorax and abdomen. Possess jointed legs which may be modified for walking, swimming feeding and feeling. Exoskeletonh..

Skeletal system or the skeleton forms the bony framework of the body providing support and protection for some of the soft organs, particularly in the skull and pelvis; acting as levers in movements and providing surfaces for the attachment of the skeletal muscles. In certain parts the framework is..

Phylum Echinodermata - Star fish Marine in habitat. Body is radially symmetrical, star shaped, spherical or elongate, Exoskeleton is spiny. Head is absent and five radially arranged arms present. Locomotion is with the help of tube feet. Sexes are separate. Example: Asterias (star fish), ..

Features of Arthropoda..

. Reproduction is usually asexual i.e., by budding in the polyp form and sexual in medusa form. Exoskeleton made of lime is found in corals. Example: Hydra, Obelia, Aurelia, Metridi..