Biology
Grade-9
Easy

Question

All of Darwin's finches have various beak shapes. They are an adaptation to gain access of _____.

  1. Water
  2. Space 
  3. Food
  4. Mates

hintHint:

Darwin observed that beak shape varies among finch species. He postulated that the beak of an ancestral species had adapted over time to equip the finches to acquire different food sources.

The correct answer is: Food


    • Darwin wondered about the changes in the shape of bird beaks from island to island.
    • So-called cactus finches boast longer, more pointed beaks than their relatives the ground finches.
    • The beaks of warbler finches are thinner and more pointed than both. These adaptations make them more fit to survive on available food. 

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