When more than one adaptive radiation appears to have occurred in an isolated geographical area,it is called ...... .

What did Darwin conclude after observing the variations in the beaks of birds on the Galapagos Islands?

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.

Being all mammals,whales,dolphins,bats,monkeys,and horses have some common characters but they also show conspicuous differences. This is due to the phenomenon of

The diversity in the type of beaks of finches adapted to different feeding habits on the Galapagos Islands,as observed by Darwin,provides evidence for:

Describe one example of adaptive radiation.