Multiple choice

Which of the following is/are not found in the excreta of earthworms?

  1. Urea

  2. Ammonia

  3. Amino acids

  4. Guanine

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

There is 0% guanine in the excreta of earthworms. Guanine is exclusively found in the excreta of spiders.