Solution - Evidences for Evolution



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Differentiate between homology and analogy. Give one example of each.


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With the help of any two suitable examples explain the effect of anthropogenic actions on organic evolution.

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(a) Select the homologous structures from the combinations given below:

(i) Forelimbs of whales and bats

(ii) Tuber of potato and sweet potato

(iii) Eyes of octopus and mammals

(iv) Thorns of Bougainvillea and tendrils of Cucurbita


(b) State the kind of evolution they represent.

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Differentiate between analogy and homology giving one example each of plant and animal respectively.

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Select two pairs from the following which exhibit divergent evolution. Give reasons for your answer.

(i) Forelimbs of cheetah and mammals

(ii) Flippers of dolphins and penguins

(iii) Wings of butterflies and birds

(iv) Forelimbs of whales and mammals

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Write the similarity between the wing of a butterfly and the wing of a bat. What do you infer from the above with reference to evolution? 

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Solution for concept: Evidences for Evolution. For the courses 12th CBSE (Arts), 12th CBSE (Commerce), 12th CBSE (Science)