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Question
Homologous organs are those that show similarity in
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Solution
The correct option is C Origin
Homologous organs have the same fundamental structure which they inherit from common ancestors. Thus, their origin is common but they are functionally different. For example, the forelimbs of frog, lizard, pigeon and whale have the same basic structural plan. In each case, the forelimb consists of an upper arm, forearm, wrist, palm and fingers. The upper arm is always made up of humerus, the forearm composed of radius and ulna, the wrist consists of carpals, and the palm containing metacarpals and digits. The skeletal parts of the forelimbs of all these vertebrates are similar in structure and arrangement. But the forelimbs of these animals have different shapes and functions. In frog, they are used for leaping, in lizard for creeping, in pigeon for flying and in whale for swimming.
Homologous organs have the same fundamental structure which they inherit from common ancestors. Thus, their origin is common but they are functionally different. For example, the forelimbs of frog, lizard, pigeon and whale have the same basic structural plan. In each case, the forelimb consists of an upper arm, forearm, wrist, palm and fingers. The upper arm is always made up of humerus, the forearm composed of radius and ulna, the wrist consists of carpals, and the palm containing metacarpals and digits. The skeletal parts of the forelimbs of all these vertebrates are similar in structure and arrangement. But the forelimbs of these animals have different shapes and functions. In frog, they are used for leaping, in lizard for creeping, in pigeon for flying and in whale for swimming.
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