Multiple choice

The main nitrogenous waste of hydra is

  1. ammonia

  2. uric acid

  3. urea

  4. both ammonia and uric acid

  5. -

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

Simple multicellular organisms, like hydra, throw out solid waste matter in the form of ammonia. They require a large amount of water as ammonia is toxic.