- 1(current)
Q. No.Which of the following organisms are subject to natural selection?
| a. | prokaryotes that reproduce asexually |
| b. | single-celled eukaryotes that reproduce sexually |
| c. | organisms living in a changing environment |
| d. | organisms living in a stable environment |
1. a and b only
2. b and c only
3. c and d only
4. a, b, c and d
Subtopic: Â Natural Selection |
 64%
Level 2: 60%+
Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 137009
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Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 137009
Match each item in Column I with one in Column II and select the best match from the codes given:
Choose the correct answer from the options given below:
| 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 |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iv) | (iii) |
| 2. | (i) | (iv) | (iii) | (ii) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iii) | (ii) | (i) | (iv) |
Subtopic: Â Natural Selection |Â Concept of Organic Evolution: Evidence |
 93%
Level 1: 80%+
Please attempt this question first.
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Please attempt this question first.
What type of natural selection is shown in the given figure?
1. Stabilizing
2. Directional
3. Disruptive
4. Regressive
1. Stabilizing
2. Directional
3. Disruptive
4. Regressive
Subtopic: Â Natural Selection |
 79%
Level 2: 60%+
Please attempt this question first.
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Please attempt this question first.
What will happen to the population of two forms of Biston betularia (peppered moth) inhabiting the region polluted due to emission of soot from industries?
A. Population of dark colored moth will increase
B. Population of both the forms will decrease
C. Population of light colored moth will increase
D. Population of dark colored moth will increase while the population of light colored moth will decrease
E. Population of both the forms will increase
Choose the correct answer from the options given below:
1. A and D only
2. C, D, and E only
3. C and D only
4. B, C, and D only
A. Population of dark colored moth will increase
B. Population of both the forms will decrease
C. Population of light colored moth will increase
D. Population of dark colored moth will increase while the population of light colored moth will decrease
E. Population of both the forms will increase
Choose the correct answer from the options given below:
1. A and D only
2. C, D, and E only
3. C and D only
4. B, C, and D only
Subtopic: Â Natural Selection |
 91%
Level 1: 80%+
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| Assertion(A): | Evolution is not a directed process in the sense of determination. |
| Reason(R): | It is stochastic process based on chance events in nature and chance mutation in the organisms. |
| 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: Â Theory of Evolution & Lamarckism |Â Modern Theory of Evolution |Â Natural Selection |Â Genetic Basis of Adaptation |
 81%
Level 1: 80%+
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Assertion (A): The resistant organisms/cells appear over a time scale of centuries.
Reason (R): Excess use of antibiotics has resulted in the selection of resistant varieties.
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.
Reason (R): Excess use of antibiotics has resulted in the selection of resistant varieties.
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: Â Natural Selection |Â Concept of Speciation |Â Genetic Basis of Adaptation |
Level 3: 35%-60%
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