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Q. No.Evolution of life shows that life forms had a trend of moving from:
1. land to water
2. dry land to wet land
3. fresh water to sea water
4. water to land
1. land to water
2. dry land to wet land
3. fresh water to sea water
4. water to land
Subtopic: Â Origin of Life |Â A BRIEF ACCOUNT OF EVOLUTION |
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Level 1: 80%+
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About 65 mya, the dinosaurs suddenly disappeared from the earth. The reason for their sudden disappearance may be:
1. Only (a)
2. Only (b)
3. The truth may live in between (a) and (b).
4. Neither (a) nor (b).
| (a) | Climatic changes killed them. |
| (b) | Most of them evolved into birds. |
2. Only (b)
3. The truth may live in between (a) and (b).
4. Neither (a) nor (b).
Subtopic: Â A BRIEF ACCOUNT OF EVOLUTION |
 85%
Level 1: 80%+
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A sudden and large mutational change from one generation to the next, potentially causing single-step speciation is called as:
| 1. | Punctuated equilibrium | 2. | Saltation |
| 3. | Allopatric speciation | 4. | Sympatric speciation |
Subtopic: Â A BRIEF ACCOUNT OF EVOLUTION |
 97%
Level 1: 80%+
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Consider the given two statements:
| Assertion (A): | Evolution by natural selection, in a True sense would have started when cellular forms of life with differences in metabolic capability originated on earth. |
| Reason (R): | Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Â A BRIEF ACCOUNT OF EVOLUTION |
Level 3: 35%-60%
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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: Â A BRIEF ACCOUNT OF EVOLUTION |
 73%
Level 2: 60%+
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Consider the two statements:
| Assertion (A): | Classification of organisms into related groups should not solely be based on the morphological features. |
| Reason (R): | Convergent evolution results in unrelated organisms resembling each other. |
| 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. | (A) is False, (R) is True |
Subtopic: Â A BRIEF ACCOUNT OF EVOLUTION |
 60%
Level 2: 60%+
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Consider the given two statements:
| Assertion (A): | Lichens can be used as industrial pollution indicators. |
| Reason (R): | Lichens grow profusely in polluted areas. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Â A BRIEF ACCOUNT OF EVOLUTION |
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Level 1: 80%+
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In 1938, a fish caught in South Africa which was thought to be extinct, was a:
| 1. | Jawless fish | 2. | Armoured fish |
| 3. | Lobe finned fish | 4. | Ray finned fish |
Subtopic: Â A BRIEF ACCOUNT OF EVOLUTION |
 73%
Level 2: 60%+
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Q. No.
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