Question

Dolphins and whales have gills to breathe in water.
a. True
b. False

Answer 1

Hint: Whales and dolphins are not the fishes but they are mammals. Their bodies look like fish but function like mammals, they give birth like mammals, and they feed their children their milk and many things like mammals. Dolphins are considered to be very social as they hunt and play together.

Complete answer:
- As you all know that Dolphins and whales do not breathe in water with the help of their gills. As it is clear by the fact that dolphins and whales are mammals, they breathe normally in the air, like normal mammals do, like take an example of humans only, so dolphins and whales have to come at the top of the water, where they can take oxygen for breathing.

- Generally, dolphins and whales take a breath with the help of blowholes which are present at the top of their heads. In humans, we have a nose for doing that.

- As normal mammals like us, we have lungs, dolphins and whales also have lungs in their body.

So the correct answer to this question is false.
Because in the question it is asking about the presence of gills for breathing in dolphins and whales.

Additional information:
- Mammals are the types of animals that generally breathe in the air rather than breathe through gills, give birth to their young ones, and do not lay eggs, and feed their children by their milk.
- Whales are sometimes seen to be at the surface of the water but not in a complete way, but sticking their top of the body to the outside in the air, because as like people they do not have a nose, but instead they have blown holes through which they take air inside their lungs.

Note:
- Dolphins and whales are mammals, so they do not belong to the category of normal fishes. So they breathe as normal mammals do, that means in the air. Hence they have to come to the top of the water to breathe in air as normal mammals do.
- Dolphins generally come in the category of carnivores and are considered to be very intelligent. Dolphins are generally seen in the groups that are seen to play with each other and also seen to hunt together, hence they are very social.