- 1(current)
Q. No.The average per capita birth rate, or __________, increases population size, whereas the average per capita death rate, or ___________, decreases population size.
| 1. | natality; demography |
| 2. | exploitation competition; interference competition |
| 3. | mortality; natality |
| 4. | natality; mortality |
Subtopic: Â Population Characters: Natality & Mortality |
 87%
Level 1: 80%+
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In a pond with 50 frogs, if 5 frogs are added due to immigration and 3 die within a week, the population density
change would be:
1. +3
2. +2
3. -2
4. 0
change would be:
1. +3
2. +2
3. -2
4. 0
Subtopic: Â Population Characters: Density |Â Population Characters: Natality & Mortality |
 90%
Level 1: 80%+
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Population growth of a species is not related to which of the following parameters?
| 1. | Nt+1 = Nt+[(B+l)-(D+E)] |
| 2. | Out of four basic processes effecting population growth three leads to increase in population size |
| 3. | Under normal conditions, natality and mortality are most important factors |
| 4. | For a newly colonised habitat immigration plays major role than birth rate |
Subtopic: Â Population Characters: Natality & Mortality |
 85%
Level 1: 80%+
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During a certain period, density of a population in a particular habitat increases due to changes in
A. Mortality
B. Natality
C. Emigration
D. Immigration
E. Migration
Choose the correct answer from the options given below:
1. A and C only
2. A and E only
3. B and D only
4. C and E only
A. Mortality
B. Natality
C. Emigration
D. Immigration
E. Migration
Choose the correct answer from the options given below:
1. A and C only
2. A and E only
3. B and D only
4. C and E only
Subtopic: Â Population Characters: Density |Â Population Characters: Natality & Mortality |
 91%
Level 1: 80%+
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Natality refers to:
| 1. | Death rate |
| 2. | Birth rate |
| 3. | Number of individuals leaving the habitat |
| 4. | Number of individuals entering the habitat |
Subtopic: Â Population Characters: Natality & Mortality |
 90%
Level 1: 80%+
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Zero growth means:
| 1. | natality balance mortality |
| 2. | natality is more than mortality |
| 3. | natality is less than mortality |
| 4. | natality is zero |
Subtopic: Â Population Characters: Natality & Mortality |
 80%
Level 1: 80%+
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- 1(current)
Q. No.
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