Review the discussion of evolution and the Investigating Life feature. Which of
ID: 276267 • Letter: R
Question
Review the discussion of evolution and the Investigating Life feature. Which of the following statements is/are most likely true? (Select all that apply) Moths that could smell the nectar at the bottom of the orchid saw the need for a longer tongue, so they grew one that reached the nectar and passed on the longer tongue to their offspring Moths that could smell the nectar at the bottom of the orchid mated with females that had longer tongues so that their offspring might have a chance to reach the nectar At least one moth species has always been able to reach the nectar of the orchid. Moths with longer tongues are more likely to have access to the orchid nectar and are therefore more likely to survive to reproduction Orchds with deeper nectaries are more lkely to have moths rub against their polen, and are therefore more likey to reproduce, than orchids with shallow nectaries.Explanation / Answer
Answer:
Correct answers are: Option-a and Option-d
* Moths that could smell the nectar at the bottom of the orchid saw the need for the longer tongue, so they grew one that reached the nectar and passed on the longer tongue to their offsprings.
Explaination- This is explained on the basis of Lamarck theory of evolution which describes about the trait that is acquired during the life span of an organism. This makes the basis of the fact that moth would tend to strain its tongue in order to reach the bottom of the orchid which would help it to acquire a long tongue. This now becomes an acquired trait. Depending upon its continous usage, the trait is then selected natrally and passed on to the subsequent progenies. This mechanism is referred to as inheritance of an acquired trait.
* Moths with longer tongues are more likely to have access to the orchid nectar and are more likely to survive to reproduction.
Explaination- Longer tongue is an acquired trait. Depending upon its characterstics and its usage, it is selected naturally in accordance with the Darwin's principle. And those moths who survive with this trait are known to be fittest as per the need to reach for the nectar. So, survival of the fittest ensures the healthy reproduction in order to pass the trait to subsequent generations. Hence, those moths that have acquired longer tongues would be successful to pass on this trait to their offsprings.
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