1.

What are the modifications that are observed in birds that help them fly?

Answer»

The following modification helps birds to fly

  • presence of feathers
  • presence of pneumatic bones; pneumatic bones are long hollow bones (have air cavities)
  • Fore limbs are modified into wings to help in flight
  • hind limbs generally have scales helping them to clasp the prey in flight or a tree branch
  • Excretion of urine and faeces is through single opening and excretion has very less amount of water this is to reduce body weight
  • Aerodynamically built body helps in flying.


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