Giraffes use their extremely long necks to reach the leaves high up on acacia trees, which other animals cannot reach, giving them a food source for which they have few competitors. What can you conclude about natural selection from this observation?

a. Giraffe necks get longer over a lifetime of stretching, and their offspring inherit the longer necks of their parents.
b. All giraffes are born with short necks and, eating acacia leaves causes them to stretch over a lifetime.
c. Other animals will mimic the giraffe and grow longer necks.
d. The giraffes with the longest necks survive and produce offspring.

Natural selection can be defined as a differential survival and reproduction. In this the organism having a favorable phenotypic advantage has better chances of survival and reproduction as compared to the other. The given situation is an example of natural selection. The long neck of giraffes is a phenotypic advantage that helps in deriving food as compared to it's competing herbivorous species. Thus, giving them a chance to survive and produce offsprings.

shrutiagrawal1798 shrutiagrawal1798 · Answer 2 · 2022-02-14T07:51:35+01:00

Natural selection is defined as the mechanism for organisms better suited to their environment to survive and reproduce more.

The giraffe's long neck is the process of evolution for the inheritable changes to feed on tall plants and trees. Thus, option A is correct.

How does natural selection contribute to evolution?

Natural selection is the mechanism of evolution in which the organism better suited to the environment will have higher chances of survival and reproduction.

The organisms will have more adapted phenotypic traits, which will help to survive in extreme environmental conditions. These changes will be heritable to the next generations leading to evolution.

The giraffe's long neck has a phenotypic advantage, in which they can feed on plants and tall trees compared to other competitors. Thus, the correct answer is Option B.

Learn more about natural selection here:

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