Question

Describe the adaptive radiation in Polychaeta by citing examples.

Answer 1

The process of evolution of different species starting from a point in a geographical area and finally radiating to other areas of geography is called adaptive: radiation, e.g. Darwin’s finches. Darwin observed different types of beaks in the same black bird in Galapagos Islands and he concluded that this was due to adaptation for different situations

Answer 2

Answer:

Adaptive radiation is an evolutionary process that produces new species from a single, rapidly diversifying lineage. This process occurs due to natural selection. An example of adaptive radiation is Darwin finches, found in Galapagos Island. A large variety of finches is present in Galapagos Island that arose from a single species, which reached this land accidentally. As a result, many new species have evolved, diverged, and adapted to occupy new habitats. These finches have developed different eating habits and different types of beaks to suit their feeding habits. The insectivorous, blood sucking, and other species of finches with varied dietary habits have evolved from a single seed eating finch ancestor.

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