Major forms of Nitrogenous waste products excreted by animals are

Most toxic form of Nitrogenous waste requiring large amount of water for excretion is

Ammonotelism is process of excreting

Many bony fishes, aquatic amphibians and aquatic insects are ammonotelic

As ammonia is readily soluble, it is generally excreted by

Ammonia is excreted through gill surfaces in fish in which form

Kidneys donot play significant role in removal of ammonia in

Terrestrial adaptation necessitated the production of

For conservation of water terrestrial adaptation necessitated production of less toxic Nitrogenous wastes like