Question

Which of the following helps in osmoregulation and excretion in tape worm?

• A. Nephridia
• B. Flame cell
• C. Rennete cells
• D. Flame cell and body surface

Answer 1

The correct option is B Flame cell

Excretion and osmoregulation in tapeworm are done by a system of specialised cells called protonephridia or flame cells. A flame cell is a hollow cell with a flame-like appearance. Its broad end encloses a long cilia or flagella. These cilia beat continuously to move water and waste. Gaseous exchange takes place through the general body surface.

Nephridia is the structure that removes waste and helps in osmoregulation in earthworms.

Renette cells are the excretory cells of roundworms.

So, the correct answer is 'Flame cell'