Classification of Animals
Question
Which of the following organisms exhibits all the following features?
(a) Poikilothermy
(b) Three-chambered heart
(c External fertilisation
(d) Indirect development
Easy
Solution
Bufo is an amphibian and has a three-chambered heart. It exhibits external fertilisation and indirect development.
Clarias, Pristis and Betta are fishes and have a two-chambered heart.
Both fishes and amphibians exhibit poikilothermy (cold-blooded).
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