Which among the following is / are true regarding the theory of "Use and disue"?

Organs that are less used fall of or are not transferred to the next generations

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Organs used extensively are generally more stronger

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The function of organs that are not frequently used are ceased in the further generations

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Strengthening and elongation of organs are a type of variations that the organism exhibits to be naturally selected

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Solution

The correct options are
B
Organs used extensively are generally more stronger

C
The function of organs that are not frequently used are ceased in the further generations

D
Strengthening and elongation of organs are a type of variations that the organism exhibits to be naturally selected

The theory of use and disuse states that the body parts that are extensively used become stronger and longer and those that are not tend to deteriorate. Lamarck used the long necks of girraffes to explain this concept. The organs that are not frequently used slowly cease functions and if present, take up a reduced form in the preceeding generations.

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