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Evolution — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYEvolution3 Marks
Question
Explain convergent and divergent evolution with the help of one example of each.
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Answer

Convergent - Different structures evolving in the same direction in different organisms eg. wings of butterfly and of birds/eye of octopus and of mammals/the flippers of penguins and dolphins/sweet potato and potato.
Divergent - Same structure evolving in different directions in different organisms eg. forelimbs of whales, bats, cheetah and humans/vertebrate hearts or brains/thorns of Bougainvillea and tendrils of cucurbita.

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