Morphology of Frog MCQ - Practice Questions with Answers

Morphology of Frog

• Frogs can live both on land and in freshwater and belong to the class Amphibia of phylum Chordata. 
• The most common species of frog found in India is Rana tigrina.
• The skin is smooth and slippery due to the presence of mucus. The skin is always maintained in a moist condition
• The colour of dorsal side of body is generally olive green with dark irregular spots. 
• On the ventral side the skin is uniformly pale yellow.
• The frog never drinks water but absorb it through the skin.
• Body of a frog is divisible into head and trunk. 
• A neck and tail are absent.
• Above the mouth, a pair of nostrils is present. Eyes are bulged and covered by a nictitating membrane that protects them while in water.
• On either side of eyes a membranous tympanum (ear) receives sound signals. 
• The forelimbs and hind limbs help in swimming, walking, leaping and burrowing. 
• The hind limbs end in five digits and they are larger and more muscular than forelimbs that end in four digits. 
• Frogs exhibit sexual dimorphism. 
• Male frogs can be distinguished by the presence of sound producing vocal sacs and also a copulatory pad on the first digit of the forelimbs which are absent in female frogs.