Question

In which one of the following organisms, its excretory organs are correctly stated

• A. Cockroach - Malpighian tubules and enteric caeca
• B. Earthworm - Pharyngeal, integumentary and septal nephridia
• C. Frog - Kidneys, skin and buccal epithelium
• D. Humans - Kidneys, sebaceous glands and tear glands

Answer 1

The correct option is B Earthworm - Pharyngeal, integumentary and septal nephridia

The excretory system of earthworm consists of nephridia as the excretory organ which is analogous to the kidney of vertebrates. Nephridia are porous, long, thin coiled tube which is found in all segments except first three. Based on their position in the body, they are three types pharyngeal, integumentary and septal nephridia.

So, the correct answer is 'Option B'.