Multiple choice

Waste material containing ___________ are removed through nephridia in earthworm.

  1. carbon di-oxide

  2. nitrogen

  3. oxygen

  4. soil

  5. waste organic matter

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, it is correct. Nitrogen-containing waste materials from cell activities are removed to the outside of the body by little tubes. There are two such structures, called nephridia, in each segment except the first three and the last.