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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 |
Level 3: 35%-60%
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 |
90%
Level 1: 80%+
NEET - 2015
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The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that:
| 1. | both plant populations in this habitat decreased |
| 2. | population-B competed more successfully for food than population-A |
| 3. | population-A produced more offspring than population-B |
| 4. | population-A consumed the members of population-B |
Subtopic: Population Interactions: Competition |
89%
Level 1: 80%+
NEET - 2015
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A sedentary sea anemone gets attached to the shell lining of a hermit crab. The association is:
1. Symbiosis
2. Commensalism
3. Amensalism
4. Ectoparasitism
Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |
Level 4: Below 35%
AIPMT - 2013
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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%
Level 1: 80%+
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 |
68%
Level 2: 60%+
AIPMT - 2013
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The age pyramid with broad base indicates:
1. high percentage of old individuals
2. low percentage of young individuals
3. a stable population
4. high percentage of young individuals
1. high percentage of old individuals
2. low percentage of young individuals
3. a stable population
4. high percentage of young individuals
Subtopic: Age Pyramid |
82%
Level 1: 80%+
NEET - 2013
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Which one of the following is not a parasitic adaptation?
1. Development of adhesive organs
2. Loss of digestive organs
3. Loss of reproductive capacity
4. Loss of unnecessary sense organs
1. Development of adhesive organs
2. Loss of digestive organs
3. Loss of reproductive capacity
4. Loss of unnecessary sense organs
Subtopic: Population Interactions: Parasitism |
80%
Level 1: 80%+
NEET - 2013
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People who have migrated from the planes to an area adjoining Rohtang Pass about six months back:
| 1. | Have more RBCs and their haemoglobin has a lower binding affinity to 02 |
| 2. | Are not physically fit to play games like football |
| 3. | Suffer from altitude sickness with symptoms like nausea, fatigue, etc. |
| 4. | have the usual RBC count but their haemoglobin has a very binding affinity to 02 |
67%
Level 2: 60%+
AIPMT - 2012
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Subtopic: Population Interactions: Parasitism |
71%
Level 2: 60%+
AIPMT - 2012
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