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Q. No.The equation of Verhulst-Pearl logisitic growth model is
\(\dfrac {dN}{dt}=rN \left[\dfrac {K-N}{K}\right ]\)
From this equation, K indicates:
1. Biotic potential
2. Carrying capacity
3. Population density
4. Intrinsic rate of natural increase
\(\dfrac {dN}{dt}=rN \left[\dfrac {K-N}{K}\right ]\)
From this equation, K indicates:
1. Biotic potential
2. Carrying capacity
3. Population density
4. Intrinsic rate of natural increase
Subtopic: Population: Logistic Growth Model |
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NEET - 2024
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | Gause's competitive exclusion principle states that two closely related species competing for different resources cannot exist indefinitely. |
| Statement II: | According to Gause's principle, during competition, the inferior will be eliminated. This may be true if resources are limiting. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Both Statement I and Statement II are False. |
| 2. | Statement I is True but Statement II is False. |
| 3. | Statement I is False but Statement II is True. |
| 4. | Both Statement I and Statement II are True. |
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
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NEET - 2024
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Given below are two statements :
In light of the above statements, choose the correct answer from the options given below :
1. Both Statement I and Statement II are True
2. Both Statement I and Statement II are False
3. Statement I is True but Statement II is False
4. Statement I is False but Statement II is True
| Statement I: | When the fitness of one species is significantly lower in the presence of another species, the process is defined as competition. |
| Statement II: | When fungi remain in association with living plants or animals, they are called saprophytes. |
1. Both Statement I and Statement II are True
2. Both Statement I and Statement II are False
3. Statement I is True but Statement II is False
4. Statement I is False but Statement II is True
Subtopic: Population Interactions: Competition | Population Interactions: Commensalism, Protocooperation & Mutualism |
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NEET - 2024
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The population growing in a habitat with limited resources will show:
Choose the correct answer from the options given below:
1. A and B only
2. C and D only
3. A and D only
4. B and C only
| A. | Lag phase, followed by phases of acceleration and deceleration and finally an asymptote. |
| B. | The ability to realise its innate potential to grow in number and reach enormous densities in short time. |
| C. | Exponential growth |
| D. | Logistic growth |
1. A and B only
2. C and D only
3. A and D only
4. B and C only
Subtopic: Population: Logistic Growth Model |
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NEET - 2024
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Which of the following is not an example of mutualism?
1. Lichens
2. Mycorrhizae
3. An orchid on a branch of mango plant
4. The wasp pollinating fig inflorescence
1. Lichens
2. Mycorrhizae
3. An orchid on a branch of mango plant
4. The wasp pollinating fig inflorescence
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
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From NCERT
NEET - 2024
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Given below are two statements: One is labelled as
Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the correct answer from the options given below:
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. |
| 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 |
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From NCERT
NEET - 2024
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Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | Connell's elegant field experiment showed that on the rocky sea, the larger and competitively superior barnacles dominate the intertidal area and exclude the smaller barnacles from that area. |
| Reason (R): | Generally, herbivores and plants appear to be more adversely affected by competition than carnivores. |
| 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: Competition |
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From NCERT
NEET - 2024
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Match List-I with List-II:
Choose the correct answer from the options given below:
1. A-III,B-II,C-I,D-IV
2. A-IV,B-I,C-II,D-III
3. A-II,B-III,C-I,D-IV
4. A-II,B-III,C-IV,D-I
| List-I | List-II | ||
| A. | Predator | I. | Ophrys |
| B. | Mutualism | II. | Pisaster |
| C. | Parasitism | III. | Female wasp and fig |
| D. | Sexual deceit | IV. | Plasmodium |
1. A-III,B-II,C-I,D-IV
2. A-IV,B-I,C-II,D-III
3. A-II,B-III,C-I,D-IV
4. A-II,B-III,C-IV,D-I
Subtopic: Population Interactions: Competition | Population Interactions: Predation | Population Interactions: Parasitism | Population Interactions: Commensalism, Protocooperation & Mutualism |
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From NCERT
NEET - 2024
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Match List-I with List-II:
Choose the correct answer from the options given below:
1. A-I,B-IV,C-III,D-II
2. A-IV,B-I,C-II,D-III
3. A-III,B-I,C-II,D-IV
4. A-II,B-IV,C-III,D-I
| List-I | List-II | ||
| A. | Migratory flamingoes and resident fish in South American lakes | I. | Interference competition |
| B. | Abingdon tortoise became extinct after introduction of goats in their habitat | II. | Competitive release |
| C. | Chathamalus expands its distributional range in the absence of Balanus | III. | Resource partitioning |
| D. | Five closely related species of Warblers feeding in different location on the same tree | IV. | Interspecific competition |
1. A-I,B-IV,C-III,D-II
2. A-IV,B-I,C-II,D-III
3. A-III,B-I,C-II,D-IV
4. A-II,B-IV,C-III,D-I
Subtopic: Population Interactions: Competition |
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From NCERT
NEET - 2024
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When will the population density increase, under special conditions?
When the number of:
When the number of:
| 1. | deaths exceeds number of births and also number of emigrants equals number of immigrants |
| 2. | births plus number of immigrants equal number of deaths plus number of emigrants |
| 3. | birth plus number of emigrants is more than the number of deaths plus number of immigrants |
| 4. | birth plus number of immigrants is more than the sum of number of deaths and number of emigrants |
Subtopic: Population Characters: Density | Population Characters: Natality & Mortality | Population Characters: Age Structure & Migration |
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