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Q. No.Which one of the following is an appropriate example of 'sexual deceit'?
1. Female wasp and fig
2. Cuckoo and crow
3. Ophrys and bumblebee
4. Sea anemone and clown fish
1. Female wasp and fig
2. Cuckoo and crow
3. Ophrys and bumblebee
4. Sea anemone and clown fish
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
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Which of the following equations depicts Verhulst-Pearl logistic population growth ?
1. \(\dfrac{dN}{dt} = rN \left(\frac{K-N}{K}\right)\)
2. \(\dfrac{dN}{dt} = rN \left(\frac{K+N}{K}\right)\)
3. \(\dfrac{dN}{dt} = rN \left(\frac{K}{K-N}\right)\)
4. \(\dfrac{dN}{dt} = rN \left(\frac{K-N}{N}\right)\)
1. \(\dfrac{dN}{dt} = rN \left(\frac{K-N}{K}\right)\)
2. \(\dfrac{dN}{dt} = rN \left(\frac{K+N}{K}\right)\)
3. \(\dfrac{dN}{dt} = rN \left(\frac{K}{K-N}\right)\)
4. \(\dfrac{dN}{dt} = rN \left(\frac{K-N}{N}\right)\)
Subtopic: Population: Logistic Growth Model |
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Choose the correct statements regarding population interactions between two species.
Choose the correct answer from the options given below:
| A. | In both parasitism and commensalism, only one species benefits and the other species is harmed. |
| B. | Both species benefit in mutualism. |
| C. | Both species benefit in commensalism. |
| D. | In parasitism, only one species benefits and the other species is harmed |
| E. | In amensalism, one species is harmed and the other is unaffected. |
| 1. | A and D only | 2. | A and B only |
| 3. | B and E only | 4. | B, D and E only |
Subtopic: Miscellaneous |
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Epiphytes, that are growing on the mango branch, is an explanation of which of the following?
| 1. | Predation | 2. | Amensalism |
| 3. | Commensalism | 4. | Mutualism |
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
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NEET - 2025
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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: | Fig fruit is a non-vegetarian fruit as it has enclosed fig wasps in it. |
| Statement II: | Fig wasp and fig tree exhibit mutual relationship as fig wasp completes its life cycle in fig fruit and fig fruit gets pollinated by fig wasp. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
Level 4: Below 35%
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Which one of the following equations represent the Verhulst-Pearl Logistic Growth of population?
| 1. | \(\frac{d \mathrm{~N}}{d t}=r N\left(\frac{N-K}{N}\right) \) | 2. | \(\frac{d N}{d t}=N\left(\frac{r-K}{K}\right) \) |
| 3. | \(\frac{d N}{d t}=r\left(\frac{K-N}{K}\right) \) | 4. | \(\frac{d N}{d t}=r N\left(\frac{K-N}{K}\right)\) |
Subtopic: Population: Logistic Growth Model |
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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 |
86%
Level 1: 80%+
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. |
| 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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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 |
64%
Level 2: 60%+
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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 |
88%
Level 1: 80%+
NEET - 2024
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