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Q. No.The emergence of resistance to antibiotics in bacterial groups is due to:
1.
adaptive radiation
2.
transduction
3.
pre-existing variation in the population
4.
mutations induced by antibiotics
Subtopic: Concept of Organic Evolution: Evidence |
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| Assertion (A): | Disturbance in genetic equilibrium, or Hardy-Weinberg equilibrium can be interpreted as resulting in evolution. |
| Reason (R): | This principle says that allele frequencies in a population are stable and is constant from generation to generation. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True, (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Hardy Weinberg Law |
From NCERT
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Which of the following was the first primate to consistently use tools like stone weapons?
1. Neanderthals
2. Australopithecus
3. Homo habilis
4. Homo sapiens
1. Neanderthals
2. Australopithecus
3. Homo habilis
4. Homo sapiens
Subtopic: Evolution of Homo Sapiens |
From NCERT
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Which extinct reptiles are considered as ancestors of dinosaurs, crocodiles, and birds?
1. Therapsids
2. Thecodonts
3. Pterosaurs
4. Plesiosaurs
1. Therapsids
2. Thecodonts
3. Pterosaurs
4. Plesiosaurs
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
60%
From NCERT
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According to the, now discarded, theory of spontaneous generation of life:
| 1. | life arose from living forms only |
| 2. | life on earth came from outer space |
| 3. | life can arise from non-living things only. |
| 4. | life arises spontaneously, neither from living nor from the non-living. |
Subtopic: Origin of Life |
59%
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According to the Hardy-Weinberg equilibrium, which condition is not required for a population to remain at genetic equilibrium?
| 1. | Random mating must occur. |
| 2. | The population must be infinitely large. |
| 3. | Migration must occur frequently with other populations. |
| 4. | There should be no selection for any of the genotypes. |
Subtopic: Hardy Weinberg Law |
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From NCERT
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Which of the following is an example of homologous organs?
| 1. | Wings of birds and wings of insects |
| 2. | Flippers of dolphins and hands of humans |
| 3. | Eyes of octopus and eyes of humans |
| 4. | Thorns of roses and tendrils of peas |
Subtopic: Embryological Evidence of Evolution |
55%
From NCERT
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Geneticists refer to "fitness" as:
| 1. | the measure of an organism's adaptability to various habitats. |
| 2. | the number of mates each individual of the population selects. |
| 3. | the relative health of each individual in the population. |
| 4. | a measure of the contribution of a genotype to the gene pool of the next generation. |
Subtopic: Biological Evolution |
From NCERT
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Consider the given two statements:
| Assertion (A): | Evolution can occur if there is genetic variation within a population. |
| Reason (R): | The meaning of EVOLUTION is descent with modification from preexisting species. |
| 1. | Both (A) and (R) are True but the (R) does not correctly explain (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True and the (R) correctly explains (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
From NCERT
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Consider the given two statements:
| Assertion (A): | Variations on which natural selection acts, arise as a result of random mutations. |
| Reason (R): | A new variation may, or may not, be adaptive. |
| 1. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 2. | Both (A) and (R) are True and (R) correctly explains (A). |
| 3. | (A) is False and (R) is also False. |
| 4. | (A) is True but (R) is False. |
Subtopic: Darwin's Theory |
54%
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