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The correct statements are A. We can not see a bird’s ears. A bird has tiny holes on both sides of its head. B. Generally, the holes are covered with feathers. C. You will see tiny holes on a lizard’s head. These are its ears. D. A crocodile also has ears like this, but we can not see them easily. 

The correct statements are A. We can not see a bird’s ears. A bird has tiny holes on both sides of its head. B. Generally, the holes are covered with feathers. C. You will see tiny holes on a lizard’s head. These are its ears. D. A crocodile also has ears like this, but we can not see them easily.  Correct Answer All are correct

Concept:

  • Ears are sense organs that help us in hearing.
  • Humans have external ears.
  • The structure of the ear is different in different organisms.

Explanation:

  • Birds’ ears are small holes covered with feathers.
  • These cannot be generally seen by our eyes.
  • Snakes do not have external ears. They only feel the vibrations on the ground.
  • Lizards have external ears (ear holes).
  • Crocodile's ear is similar to that of a lizard, but it cannot be seen.

⇒ 

  • We can not see a bird’s ears. A bird has tiny holes on both sides of its head. - Correct
  • Generally, the holes are covered with feathers. - Correct
  • You will see tiny holes on a lizard’s head. These are its ears. - Correct
  • A crocodile also has ears like this, but we can not see them easily. - Correct.

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