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Q. No.A study of fossils in different sedimentary layers:
I:
indicates the geological period in which they existed.
II:
shows that life-forms varied over time.
III:
shows that certain life-forms are restricted to certain geological time-spans.
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Palentological Evidences of Evolution |
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Identify the correct statements:
a. Homology indicates common ancestry.
b. Sweet potato and potato is example for homology.
c. Analogous structures are a result of convergent evolution.
d. Vertebrate hearts or brains are analogous structures.
1. a and b only
2. c and d only
3. a and c only
4. b and d only
a. Homology indicates common ancestry.
b. Sweet potato and potato is example for homology.
c. Analogous structures are a result of convergent evolution.
d. Vertebrate hearts or brains are analogous structures.
1. a and b only
2. c and d only
3. a and c only
4. b and d only
Subtopic: Palentological Evidences of Evolution |
89%
From NCERT
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What will not be true regarding ‘industrial melanism’?
| 1. | Before industrialisation set in in England, it was observed that there were more white-winged moths on trees than dark-winged or melanised moths. |
| 2. | After industrialisation, there were more dark-winged moths in the same area. |
| 3. | In areas where industrialisation did not occur e.g. in rural areas, the count of melanic moths was low. |
| 4. | One of two variants got completely wiped out according to prevalent conditions and later arose through a recurring mutation. |
Subtopic: Theory of Evolution & Lamarckism |
85%
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Consider the given two statements:
| Assertion: | Darwin's finches are an often-used textbook example of adaptive radiation. |
| Reason: | Darwin's finches are Galapagos endemics famously adapted for a specialized feeding behavior. |
| 1. | Both Assertion and Reason are true but the Reason does not correctly explain the Assertion. |
| 2. | Both Assertion and Reason are true and the Reason correctly explains the Assertion. |
| 3. | Assertion is false but Reason is true. |
| 4. | Assertion is true but Reason is false. |
Subtopic: Darwin's Theory |
59%
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Natural selection is based on certain observations which are factual and include all the following except:
1. Natural resources are limited.
2. Populations go on increasing in size as they have unlimited fertility.
3. No two individuals are alike in a population.
4. Most of variations are inherited
1. Natural resources are limited.
2. Populations go on increasing in size as they have unlimited fertility.
3. No two individuals are alike in a population.
4. Most of variations are inherited
Subtopic: Natural Selection |
67%
From NCERT
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Hugo deVries brought forth the idea of mutations while working on:
1. Evening primrose
2. Fruit fly
3. Coenorhabditis elegans
4. Maize
1. Evening primrose
2. Fruit fly
3. Coenorhabditis elegans
4. Maize
Subtopic: Hugo De Vries Theory of Evolution |
89%
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Disturbance in genetic equilibrium, or Hardy-Weinberg equilibrium, is interpreted as resulting in:
1. adaptive radiation
2. evolution
3. saltation
4. speciation
1. adaptive radiation
2. evolution
3. saltation
4. speciation
Subtopic: Hardy Weinberg Law: 2 |
59%
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Five factors are known to affect Hardy-Weinberg equilibrium. Which of the following is not one of them?
1. gene migration or gene flow
2. genetic drift
3. mutation
4. random mating
1. gene migration or gene flow
2. genetic drift
3. mutation
4. random mating
Subtopic: Hardy Weinberg Law: 2 |
84%
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A process in which heritable variations enabling better survival are enabled to reproduce and leave greater
number of progeny is called as:
1. Evolution
2. Natural selection
3. Speciation
4. Gene flow
number of progeny is called as:
1. Evolution
2. Natural selection
3. Speciation
4. Gene flow
Subtopic: Natural Selection |
87%
From NCERT
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Which of the following periods in geological time scale is not included in the Palaeozoic era?
1. Silurian
2. Cretaceous
3. Devonian
4. Carboniferous
1. Silurian
2. Cretaceous
3. Devonian
4. Carboniferous
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
75%
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