Question

Match the following:

$\begin{array}{cc}i.\text{Ammonotelism (Bony fishes)}& a.\text{Amino acids}\\ ii.\text{Ureotelism (Frogs)}& b.\text{Guanine}\\ iii.\text{Uricotelism (Birds)}& c.\text{Ammonia}\\ iv.\text{Aminotelism (Molluscs)}& d.\text{Uric acid}\\ v.\text{Guanotelism (Spiders)}& e.\text{Urea}\end{array}$

• A. i). a .,ii).c., iii). d., iv). b., v).e
• B. i). d., ii). a., iii). e., iv). c., v).b
• C. i).c., ii). e., iii). d., iv). a., v).b
• D. i). a., ii). d., iii). b., iv). c., v).e

Answer 1

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).