Class 11 · Animal Kingdom

Amphibian Characteristics & Life Cycle — NEET Biology

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📖 NCERT Source

As the name indicates (Gr., Amphi: dual, bios, life), amphibians can live in aquatic as well as terrestrial habitats. Most of them have two pairs of limbs. Body is divisible into head and trunk. Tail may be present in some. The amphibian skin is moist (without scales). The eyes have eyelids. A tympanum represents the ear. Alimentary canal, urinary and reproductive tracts open into a common chamber called cloaca which opens to the exterior. Respiration is by gills, lungs and through skin. The heart is three-chambered (two auricles and one ventricle). These are cold-blooded animals. Sexes are separate. Fertilisation is external. They are oviparous and development is indirect.

NCERT Biology · Class 11 · Chapter 4 · Paragraph 52
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QuestionPractice Question

Assertion (A): The class Amphibia is named to reflect their dual habitat capability. Reason (R): As the name indicates, amphi means dual and bios means life, referring to aquatic and terrestrial habitats.

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Correct answer: A If both assertion and reason are true and the reason is the correct explanation of the assertion.

NCERT confirms amphibians can live in both habitats (Assertion true). NCERT states “As the name indicates (Gr., Amphi : dual, bios, life), amphibians can live in aquatic as well as terrestrial habitats” (Reason true). The Reason explains WHY the name was chosen - the Greek roots directly describe the dual life capability mentioned in the Assertion.

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What does NCERT say about As name indicates Gr?
As the name indicates (Gr., Amphi: dual, bios, life), amphibians can live in aquatic as well as terrestrial habitats. Most of them have two pairs of limbs.
Has this concept appeared in NEET?
Practice this NCERT concept with questions on MedicNEET.
Which chapter is this from?
Animal Kingdom, Class 11 NCERT Biology.

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