Which of the following refers to correct example(s) of organisms that have evolved due to changes in environment brought about by anthropogenic action?
(a) | Darwin's Finches of Galapagos islands |
(b) | Herbicide-resistant weeds |
(c) | Drug-resistant eukaryotes |
(d) | Man-created breeds of domesticated animals like dogs |
1. (a) and (c)
2. (b), (c) and (d)
3. only (d)
4. only (a)
Column I | Column II | ||
(a) | Adaptive radiation | (i) | Fast emergence of resistance in bacteria against antibiotics |
(b) | Convergent evolution | (ii) | Bones of forelimbs in Man and Whale |
(c) | Divergent evolution | (iii) | Wings of Butterfly and Bird |
(d) | Evolution by anthropogenic action | (iv) | Dispersion and diversification of Australian marsupials |
(a) | (b) | (c) | (d) | |
1. | (ii) | (i) | (iv) | (iii) |
2. | (i) | (iv) | (iii) | (ii) |
3. | (iv) | (iii) | (ii) | (i) |
4. | (iii) | (ii) | (i) | (iv) |
Select the correct match regarding adaptive radiation of Australian marsupials corresponding to placental mammals
1. Numbat-Flying Squirrel
2. Tasmanian Wolf - Bobcat
3. Marsupial mouse- Mole
4. Spotted Cuscus - Lemur
Statement I: | In England, during the Industrial Revolution, the black-colored form of Biston Betularia became dominant over the light-colored form of moth because of natural selection, the darker forms were selected. |
Statement II: | Prior to the Industrial Revolution, the peppered moths exhibited protective mimicry and the light-colored moths were not noticed by predatory birds due to light-colored lichens on the bark of trees. |
Assertion (A): | Adaptive ability is inherited. |
Reason (R): | Individuals having heritable and useful variations reproduce better and leave more progeny. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A) |
3. | (A) is true but (R) is false |
4. | (A) is false but (R) is true |
(a) | The first mammals were like Macaca. |
(b) | Due to continental drift, North American animals were overridden by south American fauna. |
(c) | Pouched mammals of Australia survived because of lack of competition from metatherians. |
(d) | Seals and sea cows are terrestrial mammals. |
Assertion (A): | The new forms of life have arisen at different times in the history of the earth. |
Reason (R): | Studies showed that life forms varied over time and certain life forms are restricted to certain geological timespans. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
3. | (A) is true, but (R) is false. |
4. | (A) is false, but (R) is true. |
Assertion (A): | In convergent evolution, the same structure developed in animals along different directions due to adaptations to different needs. |
Reason (R): | Homologous structures have similar anatomy but perform different functions. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
3. | (A) is true, but (R) is false. |
4. | (A) is false, but (R) is true. |