EVOLUTION
MODERN THEORY OF EVOLUTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Finches had different beak shapes to suit their food source
|
|
|
Finches had unusual reproductive behavior
|
|
|
Finches changed features during their lifetime
|
|
|
Finches were able to survive from predator attacks
|
Detailed explanation-1: -Darwin wondered about the changes in shape of bird beaks from island to island. So-called cactus finches boast longer, more pointed beaks than their relatives the ground finches. Beaks of warbler finches are thinner and more pointed than both. These adaptations make them more fit to survive on available food.
Detailed explanation-2: -Eventually Darwin theorized that different species of finch had evolved on different islands, their distinctive beaks being an adaptation to distinct natural habitats or environmental niches. The woodpecker finch is one of the only birds to use tools to help him find food.
Detailed explanation-3: -On the Galápagos, finches evolved based on different food sources-long, pointed beaks served well for snatching insects while broad, blunt beaks work best for cracking seeds and nuts.
Detailed explanation-4: -So, the correct answer is ‘Seed eating’
Detailed explanation-5: -Darwin’s finches are well known for their remarkable diversity in beak form and function. Field studies have shown that beaks evolve by natural selection in response to variation in local ecological conditions.