Millionaire Mode

Movements - class-VI

Question 1 of 55

The mallard duck possesses a keeled sternum. What is the function of this specialised bone structure?

  1. To provide stability in water
  2. To provide a site of attachment for the large flight muscles
  3. To increase the body's surface area for heat exchange
  4. It is a weapon used in sexual competition between males

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15₹7 Crores
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