Match List - I with List - II and choose the correct answer from the options given below.
| List - I | List - II |
| (a) Adaptive radiation | (i) Selection of resistant varieties due to excessive use of herbicides and pesticides |
| (b) Connvergent evolution | (ii) Bones of forelimbs in Man and Whale |
| (c) Divergent evolution |
(iii) Wings of Butterfly and Birds |
| (d) Evolution by athropogenic action |
(iv) Darwin Finches |
Correct Answer :
a - iv, b - iii, c - ii, d - i
Solution :
The correct option is a - iv, b - iii, c - ii, d - i.
To match the concepts in List - I with the examples in List - II, let us analyze each term step-by-step:
(a) Adaptive radiation matches with (iv) Darwin Finches:
Adaptive radiation is the evolutionary process wherein an ancestral species diversifies into many different forms to adapt to various ecological niches. A classic example is Darwin's finches of the Galápagos Islands, which evolved diverse beak shapes from a single ancestral seed-eating finch species to exploit different types of food (seeds, insects, nectar, etc.).
(b) Convergent evolution matches with (iii) Wings of Butterfly and Birds:
Convergent evolution occurs when unrelated species independently develop similar traits or structures (analogous organs) as adaptations to similar environmental pressures or lifestyles. The wings of a butterfly (an invertebrate) and a bird (a vertebrate) serve the same function of flight but have entirely different embryonic origins and anatomical structures, illustrating convergent evolution.
(c) Divergent evolution matches with (ii) Bones of forelimbs in Man and Whale:
Divergent evolution is the process by which closely related species accumulate differences, leading to speciation, often due to adaptation to different environments. This is represented by homologous structures, which share a common ancestral design but are modified for different functions. The forelimbs of a human (used for grasping) and a whale (used for swimming) share the same basic skeletal pattern (humerus, radius, ulna, carpals, metacarpals, and phalanges), indicating a common ancestor.
(d) Evolution by anthropogenic action matches with (i) Selection of resistant varieties due to excessive use of herbicides and pesticides:
Anthropogenic action refers to human-driven activities. The rapid evolution of herbicide-resistant weeds and pesticide-resistant insects due to the overuse of chemical agents is a modern example of natural selection occurring in response to human actions.
By pairing the matched terms, we get:
(a) ⇒ (iv)
(b) ⇒ (iii)
(c) ⇒ (ii)
(d) ⇒ (i)
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