Question

Choose the correct answers from the alternatives given .
For an adaptive radiation to be successful

• A. Transitional form must be provided physical access to the new environment
• B. Transitional form must face high levels of competition in order to refine the adaptations that allowed it to enter the new environment
• C. Invader organisms must have a design appropriate for the new environment
• D. Both (b) and (c)

Answer 1

The correct option is D Both (b) and (c)

Adaptive radiation is the evolution of an animal or plant group into a wide variety of types adapted to specialized modes of life. This takes place when a species radiates to different geographical habitat and eventually get adapted to that habitat. This can only happen if due to high competition only those individual survive that are best adapted for that particular environment. In absence of organisms incapable of adapting for e.g. if their body design does not suit new habitat, they will eventually get extinct.

So, the correct option is 'Both (b) and (c)'.