Question

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

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

Answer 1

The correct option is A

Earthworm - Pharyngeal, integumentary and septal nephridia

In earthworms, three pairs of pharyngeal nephridia are present in the 3^rd, 4^th and 5^th segments.

Integumentary nephridia are present in the linings of the body wall from the 3^rd segment to the last segment.

Septal nephridia are present on the intersegmental septa of segment 15 to the last. These nephridia open into the small intestine.