Which among the following are called the Darwin's finches?

Write a short note on Adaptive Radiation and the Marsupials of Australia.

What is the most important pre-condition for adaptive radiation?

Development of similar adaptive functional structural features in an unrelated group of organisms is called:

Darwin's finches are an example of which phenomenon?

Given below are two statements with respect to homologous organs.
Statement $I$: These organs are structurally similar but perform different functions.
Statement $II$: Differences in homologous organs are examples of adaptive radiation.
In the light of the above statements,choose the correct option from the list given below.