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Question

Match the following:

i. Ammonotelism (Bony fishes)a. Amino acidsii. Ureotelism (Frogs)b. Guanineiii. Uricotelism (Birds)c. Ammoniaiv. Aminotelism (Molluscs)d. Uric acidv. Guanotelism (Spiders)e. Urea

A

i) a, ii) c, iii) d, iv) b, v) e

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B

i) d, ii) a, iii) e, iv) c, v) b

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C

i) c, ii) e, iii) d, iv) a, v) b

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D

i) a, ii). d, iii) b, iv) c, v). e

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Solution

The correct option is C

i) c, ii) e, iii) d, iv) a, v) b


Animals, which are able to excrete the highly toxic ammonia as it is, are known as ammonotelic animals (examples- protozoans, crustaceans, platyhelminthes, cnidarians, poriferans, echinoderms, fishes, larvae).
Ureotelism --- involves excretion of nitrogenous waste as urea (examples - man, whales, seals, desert mammals like kangaroo rats, camels, toads, frogs, cartilaginous fishes, aquatic and semi-aquatic reptiles like alligator, terrapins and turtles).
Uricotelism --- involves excretion of nitrogenous waste as uric acid (examples - birds, land reptiles, insects, land snails and some land crustaceans).
Aminotelism --- involves excretion of amino acids directly, without break down into waste products. (examples - molluscs, echinoderms)
Guanotelism --- involves excretion of the purine, guanine as the nitrogenous waste (examples - spiders).


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