Question

The diversity within the wild bird species in the diagram below can best be explained by which process?
 

(A) Natural selection
(B) Ecological succession
(C) Adaptive radiation
(D) Both [a] and [c]

Answer 1

HINT: Before we proceed into the problem, it is important to know the definition of bird diversity.
Within the class Aves, there are 29 different orders with about 10,000 different bird species. On all seven continents, they are able to reproduce. The greatest diversity of bird species may be found in the tropics. The variety of birds is astounding. Birds come in a wide range of sizes and hues.
COMPLETE STEP-BY-STEP SOLUTION:
Variable beak sizes were caused by adaptive radiation in a population of finches on the Galapagos Island. These finches were naturally selected, and they also served as the nucleus of the species' diversity.
There is a common ancestor of the wild bird species in the accompanying illustration. They are demonstrating adaptive radiation, which is the process by which several species evolve within a specific geographic region, starting at a point and then radiating to other geographic regions or habitats.
The given image also demonstrates the evolution of numerous forms with modified beaks that allow them to become insectivorous in response to their environment; this phenomenon is known as natural selection.
Therefore, the diversity within the wild bird species in the diagram can be explained by Natural selection.
Hence, the option A is correct
NOTE:
The process through which populations of living things adapt and change is known as natural selection. A population's members are naturally varied, which means that they are all distinctive in some ways. Most people have characteristics that are more environment-appropriate than others and it is included in this variety.