Explain external features of frog.
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Frogs are carnivorous tailless amphibians which are widely found in India. A diverse variety of frogs can be found all over the world; among them, the Indian frogs are called Rana tigirna. They are vertebrates, coming under the class Amphibia (phylum Chordata). Frogs are cold-blooded animals (poikilotherms) whose body temperature varies according to their environment. Hence, they need to protect themselves from extreme heat and cold for maintaining optimum body temperature.
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- An adult frog has a stout body which is differentiated into head and trunk. Other external features are a pair of nostrils, protruding eyes, a membranous tympanum (ear), slippery/warty moist skin and webbed limbs. ... The locomotion of frogs takes place with the help of their forelimbs and hind limbs.
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