Biology
Observe the figure given below and answer the questions that follow:
(a) What is the figure depicting ?
(b) What was the reason that the giraffe stretched their neck and forelimbs ?
(c) What is the name of the theory that is being depicted in the figure ?
(d) Who explained the theory ?
(e) What is the conclusion of this theory ?
Answer
(a) The figure depicts evolution in Giraffe due to extensive use of neck and forelimbs.
(b) The area where giraffe fed on grasses, fell short of its ground level vegetation and therefore they had to stretch their neck and forelimbs to reach leaves of trees.
(c) Lamarck's theory of inheritance of acquired characters
(d) Lamarck
(e) According to this theory, variations are seen in organisms due to less or overuse of organs. These variations are passed on to the offsprings. After many generation these variations become permanent feature of the organism.
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