Multiple choice

Which of the following are the characteristics of Aves?

  1. Forelimbs are modified into wings.
  2. Respiration is not through lungs.
  3. Heart is four-chambered.
  4. They lay eggs.

  1. Only 1 and 2

  2. Only 1, 3 and 4

  3. Only 2 and 4

  4. Only 1, 2 and 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

All birds are classified under the class Aves. The characteristics of birds are:

  1. Forelimbs are modified into wings.
  2. Respiration is through lungs.
  3. Heart is four-chambered.
  4. They lay eggs.

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