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Heredity and Evolution — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceHeredity and Evolution3 Marks
Question
Give an example which shown that organs of features may be adapted to new functions during the course of evolution.
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Answer

  1. Organs or features can be adopted to new. Functions during evolution Example - Feathers were developed form providing insulation in cold weather (in dinosaurs) but in birds they were adopted for flight.
  2. “Older body designs are not inefficient”. Example -Simplest life forms like Bacteria, which inhibit most inhospitable habitats like, hot springs, deejs sea, thermal vents and ice in antarctica.

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