AP BIOLOGY

Detailed explanation-1: -Adaptive radiation is a concept in evolutionary biology where the number of species with a common ancestor increase rapidly however they are characterised by great morphological and ecological variations. So, the correct answer is ‘Divergent evolution’.

Detailed explanation-2: -Adaptive radiation is the evolutionary process by which many species originate from one species in an area and radiate to different species. The phenomenon of adaptive radiation was first observed by Darwin when he travelled to a place called Galapagos Island.

Detailed explanation-3: -Adaptive radiation is the diversification of a species into different forms in order to adapt to different environmental conditions for their survival. Divergent evolution is the accumulation of differences between groups of organisms that lead to the creation of new, different varieties of species.

Detailed explanation-4: -Adaptive radiation, if occurs twice in a geographically isolated area will have a similar result, that is the evolved species will have similar adaptations suitable for the area. Hence, it will be a case of convergent evolution.

Detailed explanation-5: -Adaptive radiation is when a species rapidly adapts to fill available niches in an ecosystem. It is a pattern of evolution that is usually seen in habitats where new ecological niches have opened up.