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Question

Amphibians do not have the following


A

Three chambered heart

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B

Gills or lungs

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C

Scales

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D

Mucus glands

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Solution

The correct option is C

Scales


The correct option is C:

Explanation of the correct option:

  1. Amphibians can exist in both aquatic and terrestrial environments.
  2. They have two pairs of limbs for the most part. The body is divided into two parts: the head and the trunk.
  3. The skin of an amphibian is wet (without scales).
  4. Frogs, toads, and salamanders have mucus glands that make their bodies slick.
  5. Gills, lungs, and skin are all used to breathe.
  6. The heart is divided into three chambers (two auricles and one ventricle).

Explanation of the incorrect option:

Option A:

Amphibians have three-chambered hearts.

Option B:

Amphibians breathe through their gills, lungs, and skin.

Option D:

Frogs, toads, and salamanders have mucus glands that make their bodies slick.

Final answer: Amphibians do not have scales.


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