Choose the option that gives the major excretory product of the organism mentioned. (Eg.: Humans –Urea).
Dogs – Urea, Fish – Ammonia, Birds – Uric Acid
Mammals like humans and dogs excrete urea in their urine. Fish excrete ammonia directly into the water they live in. Birds, on the other hand, excrete uric acid which is the white colored semi-solid substance found in bird droppings. The type of excretory product depends upon the availability of water to the organism.