Why are the human hand, bat wing, and horse forelimb considered homologous?
Answer and explanation
Correct answer: Because their basic bone plan is similar, although their functions may differ
The human hand, bat wing, and horse forelimb have different functions—grasping, flying, and walking—but their major bones follow a comparable structural plan. This underlying similarity is consistent with inheritance from a common ancestral limb, followed by modification for different uses. Hence A is correct. B is false because humans and horses do not fly, while C and D confuse structure with appearance or function.
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What is the correct answer to this question?
Because their basic bone plan is similar, although their functions may differ
Why is this the correct answer?
The human hand, bat wing, and horse forelimb have different functions—grasping, flying, and walking—but their major bones follow a comparable structural plan. This underlying similarity is consistent with inheritance from a common ancestral limb, followed by modification for different uses. Hence A is correct. B is false because humans and horses do not fly, while C and D confuse structure with appearance or function.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: The Human Eye and the Colourful World. Topic: Dispersion of light.
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