Question

The phenomenon of evolution of different species in a given geographical area starting from a point and spreading to other habitats is called

(1) Adaptive radiation

(2) Saltation

(3) Co-evolution

(4) Natural selection

Answer 1

Answer (1) Adaptive radiation

Sol. The correct answer is option (1) because the process of evolution of different species in a given geographical area starting from a point and literally radiating to other areas of geography is called adaptive radiation.

• Saltation is single step large mutation.
• When one organism evolves w.r.t evolution in another organism, it is called co-evolution. e.g. Host-parasite relationship
• Natural selection is the process through which population of living organisms that adapt are selected by nature based on reproductive fitness