NEET BIOLOGY

Detailed explanation-1: -Malpighian tubules are the excretory organs of insects. It opens at the junction of midgut and hindgut (ileum) in the cockroach. Malpighian tubules absorb excretory substances from haemolymph and fat bodies and pass into the proctodaeum.

Detailed explanation-2: -In insects, Malpighian tubules (MTs) are the main osmoregulatory and excretory organs and are considered analogous to the nephridia of annelids or the kidneys of vertebrates.

Detailed explanation-3: -The principal excretory organs of insects are the Malpighian tubules, working in conjunction with the hind gut (p. 252). Other haemocoelic structures, such as the nephrocytes, fat-body and some cephalic glands, have also been regarded in the past as excretory organs.

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.

Detailed explanation-5: -The Malpighian tubule system is a type of excretory and osmoregulatory system found in some insects, myriapods, arachnids and tardigrades.