AP BIOLOGY

Detailed explanation-1: -Malpighian tubules are found in the posterior regions of insects, where they work with glands in the rectum to excrete waste and maintain osmotic balance.

Detailed explanation-2: -Drosophila and mosquitoes have MTs with large and small cell types. The large cells are the principal cells, which are responsible for most of the mass of the tubule. The small cells are thin stellate cells.

Detailed explanation-3: -Malpighian tubules are the excretory organs in insects. They separate excretory products and eliminate them along with digestive wastes in insects.

Detailed explanation-4: -Malpighian tubules are found at the junction of midgut and hindgut in insects and other arthropods. It plays a major role in excretion and osmoregulation.