According to Lamarck's idea, why was the long neck of the giraffe thought to have developed?
Answer and explanation
Correct answer: Repeated stretching of the neck to reach high leaves
The governing concept is Lamarck’s theory of use and disuse and inheritance of acquired characters. Lamarck proposed that giraffes repeatedly stretched their necks to reach leaves on tall trees; increased use was believed to lengthen the neck, and this acquired change was then thought to pass to offspring. Option A states this idea. The other options do not describe Lamarck’s explanation.
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What is the correct answer to this question?
Repeated stretching of the neck to reach high leaves
Why is this the correct answer?
The governing concept is Lamarck’s theory of use and disuse and inheritance of acquired characters. Lamarck proposed that giraffes repeatedly stretched their necks to reach leaves on tall trees; increased use was believed to lengthen the neck, and this acquired change was then thought to pass to offspring. Option A states this idea. The other options do not describe Lamarck’s explanation.
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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