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Give Any Three Characters that Have Developed During Human Evolution - ISC (Science) Class 12 - Biology (Theory)

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Question

Give any three characters that have developed during human evolution

Solution

Following morphological characters have evolved during human evolution:

  • Bipedal locomotion.
  • Straight posture.
  • Development of distinct lumbar curve.
  • Development of broad basin-shaped iliac bones in the pelvic girdle.
  • Acetabular cavities shifted inward to give straight posture.
  • Increase in the size of brain and cranial cavity.
  • Flattening of face.
  • Loss of supraorbital ridges.
  • Straightening of forehead.
  • Formation of chin.
  • Opposable thumb in the hands for grasping.
  • Sparse body hair.
  • Narrowing of nose.
  • Thining of jaw bones.
  • Reduction in the jaw musculature.
  • Reduction in the size of canines.
  • Increase in intelligence
  • Social and cultural organisation
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APPEARS IN

 2014-2015 (March) (with solutions)
Question 2.1 | 3.00 marks

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Solution Give Any Three Characters that Have Developed During Human Evolution Concept: Evolution Stages.
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