![](data:image/svg+xml;charset=utf-8,<svg height="300px" width="600px" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)
The main nitrogenous waste of Hydra is
Options
(a) Ammonia only
(b) Urea only
(c) Uric acid only
(d) Both (a)Ammonia only and (c)Uric acid only
Correct Answer:
Ammonia only
Explanation:
The main nitrogenous waste of Hydra is ammonia. Hydra has no organ of excretion, therefore, excretion of waste nitrogenous matter occurs directly by diffusion through all membrane.
