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The digestive system is composed of the alimentary canal and the digestive gland, called the hepatopancreas or the liver(read
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The alimentary canal is a fairly uniform and straight tube from mouth to anus. It may be divided into four regions: (I) pre-oral cavity, (2) fore-gut, (3) mid-gut, and (4) hind-gut.(read
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The circulatory system is poorly developed. It is of the lacunar or open type, there being no capillaries or veins. It consists of the heart, a blood vessel called the aorta and the haemocoel.(read
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It includes the mouth parts, a long alimentary canal and a pair of salivary glands. The principal parts of the alimentary canal are the foregut, the midgut and the hindgut. The foregut and hind gut are ectodermal, lined with cuticle as in the prawn ; but(read
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The Arachnida (Gr. arachne, spider; oid, like), is a heterogeneous group of spider-like animals which differ markedly from one another. However, they resemble in several important respects.(read
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The renal organs of Crustacea are two pairs of glands, the aniennary and the maxil!ary glands. Both pairs of glands rarely function together, but one succeeds the other. Generally the antennary glands function as kidneys in the larvae while the maxillary(read
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Submitting good contents in various directories have proved to be a good way to generate good amount of traffic into your website, giving it a faster growth.(read
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when sexually mature, the male and female ccckroaches pair, generally during night, from March to September. The process of copulation lasts an hour or more, during which the tip of the abdomen of the male is inserted into the genital pouch of the female(read
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Myriapoda is a small group of worm-like, multi-legged arthropads, including centipedes and millipedes. They are not especially important economically, although centipedes do a service to man by preying on insects and certain species of millepedes do some(read
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The respiratory system consists of four pairs of cuticular book-lungs or pulmonary sacs.(read
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