Question Details

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

Options

A

a - iv, b - iii, c - ii, d - i

B

a - iii, b - ii, c - i, d - iv

C

a - ii, b - i, c - iv, d - iii

D

a - i, b - iv, c - iii, d - ii

Correct Answer :

a - iv, b - iii, c - ii, d - i

Solution :

To find the correct match between List - I and List - II, let us analyze each term one by one:

(a) Adaptive radiation:
Adaptive radiation is an evolutionary process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, alters biotic interactions, or opens new environmental niches. A classic example of this is Darwin Finches (iv) of the Galapagos Islands, which evolved different beak shapes and sizes to adapt to different feeding habits from a common ancestral seed-eating finch.
Therefore, (a) matches with (iv).

(b) Convergent evolution:
Convergent evolution occurs when different species independently evolve similar traits or structures to adapt to similar ecological niches or environments. The structures that perform similar functions but have different anatomical origins are called analogous structures. An example is the wings of a Butterfly and Birds (iii). Both serve the purpose of flight, but they have completely different anatomical structures and embryonic origins.
Therefore, (b) matches with (iii).

(c) Divergent evolution:
Divergent evolution is the accumulation of differences between closely related populations within a species, leading to the formation of new species. It results in homologous structures, which share a common anatomical framework but perform different functions. The bones of forelimbs in Man and Whale (ii) share the same basic anatomical pattern (humerus, radius, ulna, carpals, metacarpals, and phalanges), but they have been modified to perform different functions (grasping in humans and swimming in whales).
Therefore, (c) matches with (ii).

(d) Evolution by anthropogenic action:
Anthropogenic evolution refers to evolutionary changes driven by human activities. The selection of resistant varieties due to the excessive use of herbicides and pesticides (i) is a prime example. Excessive chemical application leads to the natural selection of resistant individuals within pest populations, representing rapid evolution occurring within a short time frame due to human intervention.
Therefore, (d) matches with (i).

Combining all the correct matches:
a - iv, b - iii, c - ii, d - i

Thus, the correct option is a - iv, b - iii, c - ii, d - i.

Unlock Our Free Library

Access expert-curated educational resources and study materials—completely free.