Question

Which of the following is responsible for excretion in human?

• A. Simple diffusion
• B. Nephridia
• C. Malphigian tubules
• D. Flame cells
• E. Nephrons

Answer 1

The correct option is E Nephrons

1. Simple diffusion is the excretory mechanism for unicellular organisms. This process is associated with osmoregulation of cells.

2. Nephridia is the structure responsible for excretion in invertebrates. they are primarily found in land-based invertebrates like an earthworm.

3. Malpighian tubules in a similar way are excretory structures found in Arthropods.

4. Flame cells are specialized structures found only in freshwater invertebrates.

5. Nephrons are the microscopic unit of Kidney found in mammals including humans

Hence, 'Nephrons' is the correct option.