Observe the diagrammatic representation and answer the questions:(a) E

1.	Observe the diagrammatic representation and answer the questions:(a) Explain the phenomenon shown in the figure. (b) How can it be considered as an evidence of evolution? (c) Write any other example for this phenomenon. Explain.
Answer» (a) Adaptive radiation (b) A number of marsupials, each different from the other evolved from an ancestral stock, but all within the Australian island continent. When more than one adaptive radiation appeared to have occurred in an isolated geographical area (representing different habitats), it represents convergent evolution. (c) Darwin’s finches represent one of the best examples of this phenomenon. From the original seed-eating features, many other forms with altered beaks arose, it helps them to become insectivorous and vegetarian finches.

Observe the diagrammatic representation and answer the questions:(a) Explain the phenomenon shown in the figure. (b) How can it be considered as an evidence of evolution? (c) Write any other example for this phenomenon. Explain.

Answer»

(a) Adaptive radiation

(b) A number of marsupials, each different from the other evolved from an ancestral stock, but all within the Australian island continent. When more than one adaptive radiation appeared to have occurred in an isolated geographical area (representing different habitats), it represents convergent evolution.

(c) Darwin’s finches represent one of the best examples of this phenomenon. From the original seed-eating features, many other forms with altered beaks arose, it helps them to become insectivorous and vegetarian finches.

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