Question

Define ammonotelic, ureotelic and uricotelic animals? Give examples of each.

Answer 1

Hint: Excretion is the process by which an organism's metabolic waste is removed. The lungs, kidneys, and skin in vertebrates are principally responsible for this. This differs from secretion, in which the chemical may perform specialised functions after exiting the cell. In all kinds of life, excretion is a necessary activity.

Complete answer:
Ammonotelic excretion is the process of excreting nitrogenous waste in the form of ammonia. Ammonotelism is the name given to this phenomenon. Urea acid is excreted as waste by birds, amphibians, reptiles, most aquatic species, including fish, some terrestrial invertebrates, larvae, and mammals, including humans.
Animals that are ammonotelic
The nitrogenous waste of an ammonotelic organism is excreted as soluble ammonia. The ammonia produced as a by-product or waste is extremely hazardous. Because it is highly soluble, it necessitates a large amount of water for elimination.
Example: Ammonotelic organisms include protozoans, crustaceans, platyhelminthes, cnidarians, poriferans, echinoderms, fishes, and amphibian larvae/tadpoles.
Animals that are ureotelic
Excess nitrogen is excreted as urea by ureotelic organisms. In comparison to ammonia, urea is less harmful and requires less water. Uric acid or its salts are excreted by the uricotelic organism. Uric acid, in contrast to ammonia and urea, is the least poisonous and has the least water solubility. It can be kept in cells and bodily tissues without causing toxicity, requiring the least amount of water and being the most efficient route of excretion when compared to the other two mechanisms.
Example: Cartilage fish, a few bony fishes, adult amphibians, and mammals, including humans, are all ureotelic organisms.
Animals that are uricotelic
Uricotelic organisms are organisms that emit uric acid waste. Uricotelic organisms' excreta are typically white paste with insoluble solids or semi-solids. Only a small amount of water is required to flush away the uric acid.
Example: Terrestrial arthropods (including insects), lizards, snakes, and birds are all uricotelic creatures.

Note: Excretion is the process by which animals eliminate waste materials and nitrogenous metabolic by-products. Organisms maintain acid-base balance and control osmotic pressure (the balance between inorganic ions and water) through excretion.