Select Question Set:
Q. No.The principle of competitive exclusion was stated by?
1. C. Darwin
2. G. F. Gause
3. MacArthur
4. Verhulst and Pearl
Subtopic: Population Interactions: Competition |
82%
From NCERT
NEET - 2016
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When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt = rN(1-N/K):
| 1. | when N nears the carrying capacity of the habitat |
| 2. | when N/K equals zero |
| 3. | when the death rate is greater than the birth rate |
| 4. | when N/K is exactly one |
Subtopic: Population: Logistic Growth Model |
68%
From NCERT
NEET - 2016
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An association of individuals of different species living in the same habitat and having functional interactions is known as:
| 1. | Ecological niche | 2. | Biotic community |
| 3. | Ecosystem | 4. | Population |
Subtopic: Introduction to Ecology |
From NCERT
NEET - 2015
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In which of the following interactions both partners are adversely affected?
| 1. | Competition | 2. | Predation |
| 3. | Parasitism | 4. | Mutualism |
Subtopic: Population Interactions: Competition |
89%
From NCERT
NEET - 2015
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Just as a person moves from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other extremely cold northern regions move to:
1. Western Ghat
2. Meghalaya
3. Corbett National Park
4. Keoladeo National Park
Subtopic: Response of Organisms to Abiotic Factors (OLD NCERT) |
89%
From NCERT
AIPMT - 2014
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A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is:
1. 15
2. 05
3. zero
4. 10
Subtopic: Population Characters: Density |
92%
From NCERT
AIPMT - 2013
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According to Darwin, organic evolution is due to:
| 1. | Interspecific competition. |
| 2. | Competition within closely related species. |
| 3. | Reduced feeding efficiency in one species due to the presence of interfering species. |
| 4. | Intraspecific competition. |
Subtopic: Population Interactions: Competition |
67%
From NCERT
AIPMT - 2013
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Consider the following four conditions (I-IV) and select the correct pair of them as an adaption to the environment in desert lizards.
The conditions:
The conditions:
| I. | Burrowing in soil to escape high temperature |
| II. | Losing heat rapidly from the body during high temperature |
| III. | Bask in the sun when the temperature is low |
| IV. | Insulating body due to the thick fatty dermis |
| 1. | (I) and (III) | 2. | (II) and (IV) |
| 3. | (I) and (II) | 4. | (III) and (IV) |
Subtopic: Adaptations (OLD NCERT) |
81%
From NCERT
AIPMT - 2011
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What type of human population is represented by the following age pyramid?
1. Stable population
2. Declining population
3. Expanding population
4. Vanishing population
Subtopic: Population Characters: Age Structure & Migration |
84%
From NCERT
AIPMT - 2011
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Which one of the following is categorized as a parasite in a true sense?
| 1. | Human foetus developing inside the uterus draws nourishment from the mother |
| 2. | Head louse living on the human scalp as well as laying eggs on human hair |
| 3. | The cuckoo (koel) lays its eggs in a crow's nest |
| 4. | The female Anopheles bites and sucks blood from humans |
Subtopic: Population Interactions: Parasitism |
69%
From NCERT
AIPMT - 2011
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