Excretory Organs of Cockroach and OtherInsects are (1) Nephridia (2) Flame cells (3) Malpighian Tubules (4) Gizzard

Answer: Correct Option (3) Malpighian tubules

Excretory organs of Cockroach and other insects are Malpighian tubules

Excretion is the physiological process of the elimination of metabolic waste from the body. The excretory products include amino acids, urea, uric acid, carbon dioxide, water, and ammonia.

Some Molluscs and Echinoderms excrete waste products from the body in the form of amino acids. Ammonia is the primary excretory product in animals, it is derived from the proteins present in the food we eat. 

Malpighian tubules constitute the excretory organs of cockroaches and other insects.

• Nephridia are the most generally found excretory organs in earthworms
• Flame cells are the platyhelminth excretory organs
• A gizzard is present in certain insects’ food tubes, helping to break food particles