Question

*Q14: पक्षी की कौन सी अस्थियाँ पंखों को ऊपर नीचे
करने में सहायक होती हैं? (Which bones of the
bird are helpful in the up and down
movement of wings?)
488 hit (Thoracic)
O पश्च पाद (Hind Limbs)
O अग्र पाद (Forelimbs)
che chir (Shoulders)​

Answer 1

shoulders are helpful

Answer 2

Answer:

which bones of the bird are helpful in the up and down movement of wings?

→ forelimbs  

• birds belong from class aves.  
• the most important characteristics of aves are the presence of feathers and most of them can fly.
• the forelimbs of birds which consist of radius, ulna, and humerus are helped the birds to fly.
• also, wings are the modified of forelimbs.  
• the heart has 4 chambers, respiration is by the lungs.
• endoskeleton is fully ossified  and bones are longs.  
• so, option 3 is the correct answer.