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Question

Find out the false statement.


A

Aves are warm-blooded, egg-laying, and have a four-chambered heart.

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B

Aves have a feather-covered body, forelimbs are modified into wings and breathe through lungs.

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C

Most of the mammals are viviparous.

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D

Fishes, amphibians, and reptiles are oviparous.

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Solution

The correct option is D

Fishes, amphibians, and reptiles are oviparous.


The correct option is D.

Explanation for the correct option:

  1. Oviparous animals lay eggs with little embryonic development within the mother.
  2. Viviparous animals give birth to young ones.
  3. Several fishes, amphibians, and reptiles are viviparous.
  4. Examples of viviparous fish are sharks, stingrays, and giant rays.
  5. Several species of frogs and salamanders are viviparous.

Explanations for incorrect options:

Option A:

  1. Aves are warm-blooded and oviparous in nature.
  2. They have four-chambered hearts - two atria and two ventricles.

Option B:

  1. Aves have feathers that provide them covering.
  2. The forelimbs of the birds are modified as wings to assist in their flight.
  3. They respire through the lungs.

Option C:

  1. All mammals except platypus and echidnas are viviparous.
  2. These mammals are referred to as monotremes as they lay eggs.

Final answer: The false statement is fishes, amphibians, and reptiles are oviparous.


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