Question

In which one of the following option excretory organs are correctly stated against the given organism?

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

Answer 1

Answer: (B)

Earthworm - Pharyngeal, integumentary and septal

nephridiaic

Three types of nephridia function as the excretory organ in Earthworm. These three types are-

i. Septal - It is attached to the internal septa from the 15${}^{th}$ to the last segment.

ii. Integumentary - It is attached to the internal lining of body wall from the 3rd segment onwards.

iii. Pharyngeal- Paired tufts of nephridia in 3${}^{rd}$, 4${}^{th}$ and 5${}^{th}$ segments.

Thus, the correct answer is 'Earthworm-Pharyngeal, integumentary and septal nephridia.'