Samacheer Kalvi · 11th TN - English Medium · Bio Zoology · Page 70

Facts

Chapter 4: Chapter 4 · Bio Zoology · EN medium

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Classification Phylum : Chordata Class : Amphibia Order : Anura Genus : Rana Species : hexadactyla The body of a frog is streamlined to help in swimming. It is dorso-ventrally flattened and is divisible into head and trunk. Body is covered by a smooth, slimy skin loosely attached to the body wall. The skin is dark green on the dorsal side and pale ventrally. The head is almost triangular in shape and has an apex which forms the snout. The mouth is at the anterior end and can open widely. Table .

📖 Namma Kalvi 11th Bio Zoology Textbook English Medium · Page 70

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Classification Phylum : Chordata Class : Amphibia Order : Anura Genus : Rana Species : hexadactyla The body of a frog is streamlined to help in swimming. It is dorso-ventrally flattened and is divisible into head and trunk. Body is covered by a smooth, slimy skin loosely attached to the body wall. The skin is dark green on the dorsal side and pale ventrally.

The head is almost triangular in shape and has an apex which forms the snout. The mouth is at the anterior end and can open widely. Table . : Differences between a Frog and Toad Characters Frog Toad Family Ranidae Bufonidae Body shape Slender More Bulky Legs Longer Shorter Webbed feet present Absent Skin Smooth and moist skin Dry skin covered with wart like glands.

Teeth Maxillary and vomerine teeth. Teeth absent. Egg formation Lays eggs in clusters. Lays eggs in strings.

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