- 1(current)
Q. No.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: Â Population Characters: Density |
 92%
Level 1: 80%+
AIPMT - 2013
Hints
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: Â Population Characters: Density |Â Population Characters: Natality & Mortality |Â Population Characters: Age Structure & Migration |
 84%
Level 1: 80%+
NEET - 2024
Hints
The term that describes the maximum number of individuals a population can sustain in a given environment is:
1. Carrying capacity
2. Biotic potential
3. Limiting factor
4. Environmental resistance
1. Carrying capacity
2. Biotic potential
3. Limiting factor
4. Environmental resistance
Subtopic: Â Population Characters: Density |Â Population Characters: Natality & Mortality |
 90%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Under normal circumstances, which of the following are not important factors influencing population density in an area?
1. I and II
2. III and IV
3. I and III
4. II and IV
| I: | Natality |
| II: | Mortality |
| III: | Emigration |
| IV: | Immigration |
1. I and II
2. III and IV
3. I and III
4. II and IV
Subtopic: Â Population Characters: Density |Â Population Characters: Natality & Mortality |
 85%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
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