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Q. No.
Assertion(A):
Continental drift caused survival of pouched mammals of Australia.
Reason(R):
It was due to lack of competition from any other mammal.
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.
Both (A) and (R) are false.
Subtopic: Definition & Types of Evolution | Concept of Speciation |
90%
Level 1: 80%+
Hints
| Assertion (A): | In polluted environments, melanic moths were more selected by nature. |
| Reason (R): | Melanic moths were able to camouflage themselves during industrialization. |
| 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. |
Subtopic: Concept of Isolation | Concept of Speciation | Genetic Basis of Adaptation |
90%
Level 1: 80%+
Hints
| Assertion (A): | As per Darwin, over many generations, survivors will leave more progenies. |
| Reason (R): | Survivors have variations that make resource utilization better for them. |
| 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. |
Subtopic: Theory of Evolution & Lamarckism | Darwin's Theory | Summary of Darwin's Theory | Modern Theory of Evolution |
86%
Level 1: 80%+
Hints
| Assertion (A): | Pouched mammals of Australia survived after continental drift. |
| Reason (R): | There was a lack of competition from any other placental mammals. |
| 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. |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
89%
Level 1: 80%+
Hints
Which of the following is not true for Homo erectus?
| 1. | Fossils discovered in Java |
| 2. | Lived about 1.5 mya |
| 3. | Had a large brain around 900cc |
| 4. | Probably, did not eat meat |
Subtopic: Introduction to Human Evolution | Evolution of Homo Sapiens |
81%
Level 1: 80%+
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The frequencies of dominant and recessive alleles of a gene in a population are 0.7 and 0.3 respectively. The expected frequency for heterozygotes in the population is likely to be:
| 1. | 42% | 2. | 49% |
| 3. | 21% | 4. | 9% |
Subtopic: Hardy Weinberg Law |
84%
Level 1: 80%+
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Consider the two statements:
| Statement I: | Ramapithecus was more man-like. |
| Statement II: | Dryopithecus was more ape-like. |
| 1. | Statement I is incorrect; Statement II is incorrect |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Statement I is correct; Statement II is correct |
| 4. | Statement I is correct; Statement II is incorrect |
Subtopic: Evolution Prior to Ape Man |
94%
Level 1: 80%+
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The beak of the original variety of Darwin finches was adapted for:
1. Seed-eating
2. Nectar sucking
3. Insect eating
4. Piercing hardwood on stem trunks
Subtopic: Darwin's Theory |
84%
Level 1: 80%+
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Embryological support for evolution was proposed by:
1. Ernst Mayr
2. Ernst Haeckel
3. Hugo de Vries
4. Kary Mullis
Subtopic: Embryological Evidence of Evolution |
83%
Level 1: 80%+
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In 1953, S.L. Miller created conditions similar to those suggested by Oparin and Haldane in a laboratory where he created electric discharge in a closed flask containing:
| 1. | CH4, H2, NH3 and water vapour at 800°C |
| 2. | CH4, H2, HCN and hydrogen sulphide at 400°C |
| 3. | CO2, H2, NH3 and water vapour at 800°C |
| 4. | CO2, H2, HCN and hydrogen sulphide at 400°C |
Subtopic: Urey & Miller Experiment |
93%
Level 1: 80%+
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