Question

Nitrogenous waste products are eliminated mainly as
A. Urea in tadpole and ammonia in adult frog
B. Ammonia in tadpole and urea in adult frog
C. Urea in both tadpole and adult frog
D. Urea in tadpole and uric acid in adult frog

Answer 1

Hint:-The nitrogen waste (or nitrogenous wastes) are the compounds which contain an excess of the element nitrogen. They are eliminated from the organism since they are harmful substances to any person. The compounds like ammonia, urea, uric acid, and creatinine are included in these nitrogen wastes. In general, all of these substances are typically produced because of the metabolism of protein.

Complete answer:
The ammonotelic animals are the name given to the animals which excrete excess nitrogen in the form of ammonia. As we already know, the process of excretion takes place in the aquatic animal’s aquatic invertebrates, fishes, larvae, permanently aquatic amphibians.
It is said that the route of ammonia dissemination in these animals is concluded through the parts of the body such as skin, gills, or kidneys. Generally, urea is the major nitrogenous excretory product in most of the mammals and semi-terrestrial adult amphibians.
Thus, these animals are called ureotelic animals. We already know that the tadpole and the adult frog can be said to be semi-terrestrial adult amphibians. Thus, the area is the major nitrogenous waste that is excreted in both tadpole and adult frog.
Hence, the answer is Urea in both tadpole and adult frog.

Note:- The body tends to remove the nitrogenous wastes normally in form of toxic ammonia, which must be excreted. While the birds, reptiles, and some of the terrestrial invertebrates produce uric acid as waste. In general, the uricotelic organisms have the tendency to defecate the uric acid waste in the form of a white paste or powder.