Multiple choice

Which of the following statements are correct?

a. Birds have hollow bones filled with air cavities. b. Birds have a streamlined body. c. Birds have feathers for insulation. d. Hindlimbs of birds are modified into wings.

  1. Only a and b

  2. Only a, b and c

  3. Only a, b and d

  4. Only b and c

  5. All of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

These three statements are correct. Birds have hollow bones filled with air cavities. They have a streamlined body. Feathers are present on them. However, statement d is incorrect. Forelimbs of birds are modified into wings.
Statement d is incorrect. Forelimbs of birds are modified into wings.

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