OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Long tongues help anteaters escape from predators.
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Anteaters with longer tongues can reach food sources other animals cannot reach.
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Humans find long tongues more attractive in anteaters.
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Anteaters with longer tongues require more food than those with shorter tongues.
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Detailed explanation-1: -Anteaters grew long tongues because they constantly stretched their tongues. Random mutations occurred because anteaters needed to change. Each year, anteaters with the longest tongues were most likely to live.
Detailed explanation-2: -Evolutionary adaptation, or simply adaptation, is the adjustment of organisms to their environment in order to improve their chances at survival in that environment.
Detailed explanation-3: -Adaptations develop when certain variations or differences in a population help some members survive better than others (Figure below). The variation may already exist within the population, but often the variation comes from a mutation, or a random change in an organism’s genes.
Detailed explanation-4: -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-5: -Over time, as generations of individuals with the trait continue to reproduce, the advantageous trait becomes increasingly common in a population, making the population different than an ancestral one. Sometimes the population becomes so different that it is considered a new species.