OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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there will be no change in beak shape
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all of that species of birds will have died off
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most birds will have short thick beaks
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every bird will have short thick beaks
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Detailed explanation-1: -If birds with long and thin beaks are better at getting food in a specific environment than birds with short and thick beaks, what do you expect the population will look like after 50 generations? There will be mostly birds with long and thin beaks.
Detailed explanation-2: -Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
Detailed explanation-3: -Birds’ beaks are the tools they have to use to gather food. The best adapted (fittest) to the available food have the best chance of surviving (not starving to death) and of having descendants. The different variations in these beak forms are each an experiment in natural selection.
Detailed explanation-4: -The tiny seeds the medium ground finches were accustomed to eating grew scarce. Medium ground finches with larger beaks could take advantage of alternate food sources because they could crack open larger seeds. The smaller-beaked birds couldn’t do this, so they died of starvation.
Detailed explanation-5: -BirdType of beakPurposeParrotHookedTo crack fruits and nutsHumming birdLong and thinTo suck nectarCraneLongTo catch fishes in waterWoodpeckerLong and strongTo remove layers of bark and eat insects.