Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
1.
Mutualism
2.
Predation
3.
Resource partitioning
4.
Competitive release
Subtopic: Population Interactions: Competition |
77%
Level 2: 60%+
NEET - 2021
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Amensalism can be represented as:
1. Species A (–) : Species B (–)
2. Species A (+) : Species B (0)
3. Species A (–) : Species B (0)
4. Species A (+) : Species B (+)
Subtopic: Population Interactions: Amensalism |
87%
Level 1: 80%+
NEET - 2021
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In the exponential growth equation Nt =N0ert, e represents :
1. The base of natural logarithms
2. The base of geometric logarithms
3. The base of number logarithms
4. The base of exponential logarithms
Subtopic: Population: Exponential Growth Model |
68%
Level 2: 60%+
NEET - 2021
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Match List-I with List-II
| List-I | List-II |
| (a) Allen's Rule | (i) Kangaroo rat |
| (b) Physiological adaptation | (ii) Desert lizard |
| (c) Behavioural adaptation | (iii) Marine fish at depth |
| (d) Biochemical adaptation | (iv) Polar seal |
Choose the correct answer from the options given below :
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (ii) | (iii) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (iv) | (ii) | (iii) | (i) |
| 4. | (iv) | (i) | (iii) | (ii) |
67%
Level 2: 60%+
NEET - 2021
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Given below are two statements: one is labeled as Assertion (A) and the other is labeled as Reason (R).
In light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | A person goes to a high altitude and experiences 'altitude sickness' with symptoms like breathing difficulty and heart palpitations. |
| Reason (R): | Due to low atmospheric pressure at high altitudes, the body does not get sufficient oxygen. |
| 1. | (A) is true but (R) is false. |
| 2. | (A) is false but (R) is true. |
| 3. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
88%
Level 1: 80%+
NEET - 2021
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The impact of immigration on population density is:
| 1. | Negative |
| 2. | Both positive and negative |
| 3. | Neutralized by natality |
| 4. | Positive |
Subtopic: Population Characters: Density | Population Characters: Natality & Mortality |
85%
Level 1: 80%+
NEET - 2020
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Links
Match the items in Column-I with those in Column-II:
| Column-I | Column-II | ||
| (a) | Herbivores-Plants | (i) | Commensalism |
| (b) | Mycorrhiza-Plants | (ii) | Mutualism |
| (c) | Sheep-Cattle | (iii) | Predation |
| (d) | Orchid-Tree | (iv) | Competition |
Select the correct option from the following:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iv) | (ii) | (i) | (iii) |
| 2. | (iii) | (ii) | (iv) | (i) |
| 3. | (ii) | (i) | (iii) | (iv) |
| 4. | (i) | (iii) | (iv) | (ii) |
Subtopic: Population Interactions: Competition | Population Interactions: Predation | Population Interactions: Commensalism, Protocooperation & Mutualism |
84%
Level 1: 80%+
NEET - 2020
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Links
An epiphyte is a plant that:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | grows on other plants for physical support |
| II: | affects the host negatively |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
78%
Level 2: 60%+
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Cuscuta [dodder]:
| 1. | is capable of living in oligotrophic soils by getting nitrogen from insectivory |
| 2. | produces haustoria that insert themselves into the vascular system of the host |
| 3. | is a typical ephemeral that complete their life cycle over many years |
| 4. | is a succulent carrying out CAM photosynthesis |
Subtopic: Population Interactions: Parasitism |
68%
Level 2: 60%+
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Calotropis are avoided by grazing herbivores because they produce:
| 1. | stipules | 2. | thorns |
| 3. | mustard oils | 4. | cardiac glycosides |
Subtopic: Population Interactions: Predation |
89%
Level 1: 80%+
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