Adaptive Radiations
Adaptive Radiations: Overview
This Topic covers sub-topics such as Adaptive Radiation, Adaptive Radiation of Marsupials of Australia and, Darwin's Finches of the Galapagos Islands
Important Questions on Adaptive Radiations
What is adaptive radiation? Explain with example.
What is adaptive radiation? Distinguish between convergence and divergence development.
Select the option which is an example of adaptive radiation:
Assertion (A): 'Adaptation' for coping with environmental extremes is defined as any attribute of the organism (morphological, physiological, behavioural) that enables it to survive and reproduce in its habitat.
Reason (R): Plant adaptations have evolved over a short evolutionary time and are due to changes that occur in genetic material during acclimatisation.
The correct answer is
Name the island on which Darwin worked. (Hawaii/ San Juan/ Galapagos)
What is the most important pre-condition for adaptive radiation, whether it is the environmental change or reproductive fitness?
What will determine whether the newly formed species are two distinct types, when an inter-breeding population of finches was geographically separated and formed two isolated groups.
The evolution of different species in a given geographical area starting from a point and literally radiating to other areas/habitats is referred to as
Assertion: The Galapagos finches are a classical example of Adaptive Radiations.
Reason: According to Darwin, the difference in size and shape of the beaks was due to the adaptation of the species to different food habits.
The evolution of different species in a given area starting from a point and spreading to other geographical areas is known as:
The pouched mammals of Australia survived because of:
Which of the following organisms do not show adaptive radiation?
The finches of Galapagos islands provide an evidence in favour of
Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as
