Q. Which of the following is/are cetaceans?
1.Dolphins
2.Porpoises
3.Whales
How many of the statements given above are correct?
Answer: C
Notes:
Explanation: Dolphins, Porpoises and whales are called cetaceans. A cetacean is a creature belonging to a group of water living mammals that have no hind limbs and a blowhole for breathing.
Source: Shankar IAS

