Question

Malpighian tubules are
1. excretory organs of annelids
2. respiratory organs of insects
3. excretory organs of frogs
4. excretory organs of insects

Answer 1

Correct Answer - Option 4 : excretory organs of insects

Concept:​

• Excretion is the process of removal of nitrogenous wastes from the body of an organism.
• Excretion is performed by a specialized group of cells or organs called excretory organs.
• Different organisms have a different type of excretory organs
• Example: 1) Flatworms – Protonephridia & flame cells,  2) Earthworms – Nephridia,  3) Insects – Malpighian tubules,  4) crustaceans – green glands, 5) All chordates - Kidneys

Explanation

• ​The malpighian tubule is the excretory organ of the phylum Arthropoda (Insects).
• The malpighian tubule is the narrow tubule-like structure made up of a single-cell layer.
• It excretes nitrogenous products and another metabolite.
• In insects, a malpighian tubule is present in the abdominal cavity

 

Different organisms use different types of organs to remove excreta.

• Unicellular Animals / Amoeba – Diffusion through the surface of the body.
• Platyhelminthes/ Flatworms – Flame cells 
• Roundworms/Earthworms – Nephridia
• Arthropods/ Cockroaches – Malpighian tubules 
• Crustaceans / Prawns – Antennal glands / Green Glands
• Vertebrates – Kidney