Which among these is the correct combination of aquatic mammals?
Seals, Dolphins, Sharks
Dolphins, Seals, Trygon
Whales, Dolphins, Seals
Trygon, Whales, Seals
Class Mammalia -
Unique characteristic is presence of mammary glands. Two pairs of limbs and external ears or pinnae present.
-
Sharks and Trygon (sting ray) are the members of chondrichthyes (cartilaginous fish) while whale, Dolphin and Seals are aquatic mammals belong to class mammalia.
Option 1)
Seals, Dolphins, Sharks
Option is incorrect
Option 2)
Dolphins, Seals, Trygon
Option is incorrect
Option 3)
Whales, Dolphins, Seals
Option is correct
Option 4)
Trygon, Whales, Seals
Option is incorrect