Question

Given below is an illustration of the differences observed by Darwin in the beaks of the finches in the Galapagos island.

Finches with different beaks emerged from the ancestor finch. Substantiate the statement.

Answer 1

Though the finches were similar in sound and nesting habits, only they showed differences in food and food habits.

(Insectivore finches have small beaks, cactus feeding finches have long and sharp beaks, woodpecker finches feed on worms in tree trunks have sharp beaks and ground finches feed on seeds have latg beaks, etc.) So, Darwin thought that they were evolved from a common ancestor.