Question

which of the following is a mammal a) dolphins b) shark c) bombay duck d) snake​

Answer 1

Answer:

dolphin is the answer...

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Answer 2

Answer:

Dolphin is a mammal.

Explanation:

• A mammal is a vertebrate belonging to class Mammalia.
• General characteristics of mammals are that they give rise to younger ones; they are exothermic and have hairs on their body that provides extra thickness and protection for them.
• The typical characteristic of the mammals is the presence of mammary glands in females that can produce milk to feed for its young ones.
• Dolphins belong to order Cetartiodactyla of the class Mammalia and hence are mammals.
• Dolphins do not produce eggs unlike other fishes but give rise to younger ones and feed them with their own milk.
• They also breathe through their lungs instead of gills.
• Shark although produce young ones and feed them with milk, they are cold-blooded and hence is not a mammal.
• Similarly, Bombay duck and snakes are also cold-blooded and are not considered as mammals.