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Q. No.Identify the correctly matched pair:
1. Only I, II and III
2. Only I, III and IV
3. Only II, III and IV
4. I, II, III and IV
| Scientist | Contribution | |
| I: | Connell | Competitive release |
| II: | Gauss | Competitive exclusion principle |
| III: | MacArthur | Resource partitioning |
| IV: | Tillman | Rivet popper hypothesis |
1. Only I, II and III
2. Only I, III and IV
3. Only II, III and IV
4. I, II, III and IV
Subtopic: Population Interactions: Competition |
61%
Level 2: 60%+
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Consider the two statements:
| I: | In ecology, the term “niche” describes the role an organism plays in a community. |
| II: | A species’ niche encompasses both the physical and environmental conditions it requires and the interactions it has with other species. |
1. I is correct; II is correct
2. I is correct; II is incorrect
3. I is incorrect; II is correct
4. I is incorrect; II is incorrect
Subtopic: Introduction to Ecology | Organisms and its Environment |
87%
Level 1: 80%+
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Unlike a population, an individual has:
| 1. | Birth and death | 2. | Birth rate |
| 3. | Death rate | 4. | Sex ratio |
Subtopic: Population Attributes |
91%
Level 1: 80%+
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Consider the given two statements:
| Assertion (A): | The logistic growth curve is more realistic for natural populations than the exponential growth curve. |
| Reason (R): | It considers environmental resistance and carrying capacity, which limit population size. |
| 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: Population: Logistic Growth Model |
96%
Level 1: 80%+
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Why is an orchid growing as an epiphyte on a mango tree not considered parasitism?
| 1. | Because the orchid harms the mango tree by extracting nutrients. |
| 2. | Because the orchid provides essential nutrients to the mango tree. |
| 3. | Because the orchid does not extract nutrients from the mango tree, merely using it as a physical support. |
| 4. | Because the mango tree derives nutrients from the orchid. |
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
92%
Level 1: 80%+
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At which level of the biological organisation does the study of ecology typically start?
| 1. | Organism | 2. | Population |
| 3. | Biological community | 4. | Ecosystem |
Subtopic: Introduction to Ecology | Organisms and its Environment |
67%
Level 2: 60%+
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Which of the following will represent a higher Darwinian Fitness?
1. Low r value
2. High r value
3. Low carrying capacity
4. High carrying capacity
1. Low r value
2. High r value
3. Low carrying capacity
4. High carrying capacity
Subtopic: Life History Variations |
84%
Level 1: 80%+
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Which of the following is not usually an adaptation for a parasitic mode of life?
| 1. | Loss of unnecessary sense organs |
| 2. | Presence of adhesive organs or suckers |
| 3. | Loss of the digestive system |
| 4. | Low reproductive capacity |
Subtopic: Population Interactions: Parasitism |
87%
Level 1: 80%+
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Flowers and their insect pollinators must undergo co-evolution because:
| 1. | Without pollinators plants may get extinct |
| 2. | Plants have to reward the pollinators |
| 3. | The relationship must be safeguarded against cheaters |
| 4. | Insects are the major pollinators of plants |
Subtopic: Population Interactions: Coevolution |
Level 3: 35%-60%
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Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
91%
Level 1: 80%+
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