EVERYDAY SCIENCE

Detailed explanation-1: -Malpighian tubules are thin, yellow colour filaments. About 100-1050 tubules are present at the junction of the midgut and hindgut.

Detailed explanation-2: -They are yellowish in color and unbranched in nature. Glandular epithelium helps in lining each of the malpighian tubules.

Detailed explanation-3: -The malpighian tubules are the excretory organ of cockroach which excretes nitrogenous products and other remains of metabolites. It is present at the junction of the midgut and hindgut. These are fine, yellow-coloured and branched threads present in bundles, approximately about 150 in number.

Detailed explanation-4: -Malpighian tubules have as their main function the regulation and control of haemolymph composition and volume. In carrying out this function it turns out that they respond in appropriate ways to changes in haemolymph composition, not only as directed by circulating hormones, but also autonomously.

Detailed explanation-5: -Malpighian tubules are excretory organs of insects. These are unbranched tubules lying almost freely in the haemocoel and open into the alimentary canal. The main function of these tubules is to absorb nitrogenous waste products. Spiracles are the respiratory systems of insects through a series of external openings.