What is the main evolutionary indication when comparing the human hand and a bat wing?
Answer and explanation
Correct answer: Similarity in the basic bone plan indicates common ancestry
A human hand and a bat wing perform different functions, such as grasping and flying, but their forelimbs contain a corresponding basic arrangement of bones. This structural similarity is homology and suggests inheritance from a common ancestor, followed by adaptation for different uses. Thus option A is correct. They are not analogous merely because their functions differ, and the remaining options contradict observable structure.
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What is the correct answer to this question?
Similarity in the basic bone plan indicates common ancestry
Why is this the correct answer?
A human hand and a bat wing perform different functions, such as grasping and flying, but their forelimbs contain a corresponding basic arrangement of bones. This structural similarity is homology and suggests inheritance from a common ancestor, followed by adaptation for different uses. Thus option A is correct. They are not analogous merely because their functions differ, and the remaining options contradict observable structure.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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