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KCET · BIOLOGY · STD 11 - 4. Animal Kingdom

How do you differentiate a frog from a toad?

  1. A Frog has no exoskeleton but toad has scales
  2. B Frog respires through lungs but toad respires through skin
  3. C Frog has a tail but toad has no tail.
  4. D Frog has no parotid glands but toad has a pair of parotid glands
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Correct Answer

(C) Frog has a tail but toad has no tail.

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Detailed explanation

(C) Frog has a tail but toad has no tail.,
The terms "chordata" and "vertebrate" are not synonymous. Chordates are defined by having three key features: a dorsal tubular nerve cord, a rod-like notochord, and pharyngeal gill slits. While vertebrates share these features, they specifically have a vertebral column that replaces the notochord in most adults. However, not all chordates develop into vertebrates, as some retain only the notochord or its remnants.
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