Animal Kingdom

Respiration is the procedure involves in the production of energy, naturally with the intake of oxygen and the release of carbon dioxide from the oxidation…

A cockroach is being an insect posse an open circulatory system. They are equipped with an open type circulatory system. Blood vascular system of cockroach…

The alimentary canal present in the body cavity is divided into three regions: foregut. midgut and hindgut (Figure). The mouth opens into a short tubular…

The adults of the common species of cockroach, Periplaneta americana are about 34-53 mm long with wings that extend beyond the tip of the abdomen…

Cockroaches are brown or black bodied animals that are included in class Insecta of Phylum Arthropoda. Bright yellow, red and green coloured cockroaches have also…

Sensory system does not have eyes but does possess light and touch sensitive organs (receptor cells) to distinguish the light intensities and to feel the…

The nervous system of the earthworm is basically represented by ganglia arranged segment wise on the ventral paired nerve cord. The nerve cord in the…

Earthworms have a pair of excretory organs called nephridia in almost all segments. The excretory organs occur as segmentally arranged coiled tubules called nephridia (sing.:…

The body wall of the earthworm is covered externally by a thin non-cellular cuticle below which is the epidermis, two muscle layers (circular and longitudinal)…

Earthworms have long cylindrical body. The body is divided into more than hundred short segments which are similar (metameres about 100-120 in number). The dorsal…