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Q. No.Given below are two statements: One is labelled as
Assertion (A) and the other is labelled as Reason (R).
Assertion (A):
The interaction, in which one species benefits and the other is neither harmed nor benefitted, is known as commensalism.
Reason (R):
Egrets always forage close to where the cattles are grazing, otherwise it is difficult for the egrets to find the insect and catch.
In the light of the above statements, choose the correct answer from the options given below:
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 Interactions: Commensalism, Protocooperation & Mutualism |
50%
Level 3: 35%-60%
NEET - 2024
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Determine which of the following statements about reproductive strategy of populations much below the carrying capacity is most likely to be correct?
| 1. | They typically inhabit stable environments. |
| 2. | They produce a few offspring with high survival rates. |
| 3. | They have a high intrinsic growth rate. |
| 4. | They reproduce multiple times in their life and have a very long life span |
Subtopic: Population: Logistic Growth Model |
Level 3: 35%-60%
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Logistic growth in a population is characterized by:
| 1. | A constant rate of growth regardless of population size. |
| 2. | An exponential growth followed by a stabilization at the carrying capacity. |
| 3. | Decrease in population size after reaching the carrying capacity. |
| 4. | A linear increase in population size over time. |
Subtopic: Population: Logistic Growth Model |
64%
Level 2: 60%+
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Which of the following statements captures the essence of Gause's principle of competitive exclusion?
| 1. | "the more abundant species will exclude the less abundant species through competition" |
| 2. | "competition for the same resources excludes species having different life styles" |
| 3. | "no two species can occupy the same niche indefinitely when resources are limited" |
| 4. | "larger organisms exclude smaller ones through competition as in the case of large trees controlling underbrush" |
Subtopic: Population Interactions: Competition |
66%
Level 2: 60%+
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In ecological terms, a population should be defined as a group of:
1. Communities in an ecosystem
2. Species in a community
3. Individuals in a family
4. Individuals in a species
1. Communities in an ecosystem
2. Species in a community
3. Individuals in a family
4. Individuals in a species
Subtopic: Introduction to Ecology |
Level 3: 35%-60%
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Consider the given two statements:
| Assertion (A): | Predators in nature are ‘prudent’. |
| Reason (R): | Predators keep prey populations under control. |
| 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: Population Interactions: Predation |
Level 3: 35%-60%
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For a species under a logistic growth model, as it approaches its carrying capacity 𝐾, what happens to the growth rate?
1. It remains constant.
2. It continues to grow exponentially.
3. It decreases and eventually approaches zero.
4. It becomes unpredictable.
1. It remains constant.
2. It continues to grow exponentially.
3. It decreases and eventually approaches zero.
4. It becomes unpredictable.
Subtopic: Population: Logistic Growth Model |
Level 3: 35%-60%
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The population density of Siberian cranes at Bharatpur wetlands in a given year could be described as:
| 1. | Low, because their numbers are typically fewer than 10. |
| 2. | High, because they congregate in large flocks. |
| 3. | Average, as they share resources with other wetland species. |
| 4. | Increasing, due to favourable habitat conditions. |
Subtopic: Population Attributes |
65%
Level 2: 60%+
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Consider the given two statements:
| Assertion (A): | A population experiencing high natality rates will always exhibit exponential growth. |
| Reason (R): | Exponential growth occurs only when resources are unlimited. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Population: Exponential Growth Model | Population: Logistic Growth Model |
58%
Level 3: 35%-60%
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Consider the given two statements:
| Assertion (A): | The tiger census in our national parks and tiger reserves is often based on pug marks and fecal pellets. |
| Reason (R): | For ecological investigations, it is mandatory to know the absolute population densities in all instances. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True but (R) is False |
| 3. | (A) is False but (R) is True |
| 4. | Both (A) and (R) are True but (R) does not correctly explain (A). |
Subtopic: Population Attributes |
56%
Level 3: 35%-60%
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