Question

Classify different organisations according to their main excretory product Explain.​

Answer 1

Answer:

Organisms consume food for survival, growth and repair. Most of the food is digested and utilised by the body for the production of energy; the rest is expelled out from the body by the digestive system in the form of faeces. This process is NOT called excretion, though; it is called egestion (also known as defecation

Explanation:

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Answer 2

Answer:

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Explanation:

Based upon the type of nitrogeneous waste excreted, the animals are classified into the following categories:

(i) Ammonotelic Organisms: 

Ammonotelic organisms are those which excrete nitrogenous waste in the form of ammonia. 

e.g., octopus, sepia and bony fishes, pila, earthworm, amoeba, leech etc.

(ii) Ureotelic Organisms:

Uteotelic organisms are those which excrete nitrogenous waste in the form of urea.

e.g., mammals, amphibians, aquatic and semi-aquatic reptiles etc.

(iii) Uricotelic organisms:

Uricotelic organisms are the organisms which excrete nitrogenous waste in the form of uric acid.

e.g., Lizard, some insects and birds etc.