Question

Read the following statements having two blanks A and B.

“Darwin found that the bird groups _____A_____ and _____B_____ were absent in the Galapagos Islands.”

The correct option for the two blanks are:

• A. A - insect-eating warblers, B - woodpeckers
• B. A - seed eating finches, B - woodpecker
• C. A - cactus eating finches, B - warblers
• D. A - warblers, B - seed eating finches

Answer 1

The correct option is A A - insect-eating warblers, B - woodpeckers

During his voyage, Darwin visited the Galapagos islands. He observed that the islands have many endemic (localised species, found only in that place) species of plants and animals. Insect-eating warblers and woodpeckers were absent in the Islands because the vegetation of Galapagos islands were more suited for finches and other birds had to compete with finches to survive. Galapagos vegetation has adapted and diversified due to the range of habitat zones in the Galapagos Islands.

Darwin observed a group of small beak birds which were originally seed eating types in the islands. The island had a woodpecker-like finches, cactus feeding type finches, insectivorous finches and warbler like finches, originated from the seed eating ancestral variety. However, insect-eating warblers and woodpeckers are absent in the Galapagos Islands.