Question

a. Explain in brief - Lamarck's principle of use or disuse of
b. Give two examples.
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Answer 1

Answer:

This concept is called as principle of 'use or disuse of organs'. b) The neck of giraffe has become too long due to browsing on leaves of tall plants by extending their neck for several generations. Wings of birds like ostrich and emu have become weak due to no use.