Looking for classes? Ksquare Career Institute, Bengaluru →
What is common to whale, seal and shark?
A
thick subcutaneous fat
B
convergent evolution
C
homoiothermy
D
seasonal migration
Detailed Solution
Whale and seal are mammals, while the shark is a cartilaginous fish; they are not closely related.
All three live in the sea and have developed similar adaptations for swimming, such as a streamlined body and limbs modified into flippers or fins.
Unrelated organisms acquiring similar features because of a similar habitat is called convergent evolution, and the similar structures are analogous organs.
So convergent evolution is common to the whale, the seal and the shark.
Homoiothermy is found in the whale and the seal (mammals) but not in the shark, which is cold-blooded.
Thick subcutaneous fat (blubber) is a feature of the marine mammals and not of the shark.
So the answer is convergent evolution.
All three live in the sea and have developed similar adaptations for swimming, such as a streamlined body and limbs modified into flippers or fins.
Unrelated organisms acquiring similar features because of a similar habitat is called convergent evolution, and the similar structures are analogous organs.
So convergent evolution is common to the whale, the seal and the shark.
Homoiothermy is found in the whale and the seal (mammals) but not in the shark, which is cold-blooded.
Thick subcutaneous fat (blubber) is a feature of the marine mammals and not of the shark.
So the answer is convergent evolution.