- 1(current)
Q. No.| 1. | Total number always provides an accurate measure of population density, regardless of species differences in size and ecological roles. |
| 2. | In cases where individuals vary greatly in size or impact, measuring population density based on percent cover or biomass is more meaningful than simple numerical count. |
| 3. | Population density can only be determined using total number, and alternate measures like biomass or percent cover do not provide ecological insights. |
| 4. | Total number is an effective measure only in large populations; for small populations, alternative measures are irrelevant. |
A biologist studies the population of rats in a barn.
He found that the average natality was 250, average
mortality is 240, immigration is 20 and emigration to be
30. The net increase in population is
1. 10
2. 15
3. 05
4. Zero
Population size in any given habitat is also known as _______
(1) Population cluster
(2) Population explosion
(3) Population abundance
(4) Population density
change would be:
1. +3
2. +2
3. -2
4. 0
Which of the following would necessarily decrease the density of a population in a given habitat?
1. Natality> mortality
2. Immigration> emigration
3. Mortality and emigration
4. Natality and immigration
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
1. Carrying capacity
2. Biotic potential
3. Limiting factor
4. Environmental resistance
Population growth of a species is not related to which of the following parameters?
(1) Nt + 1 = Nt + [(B + I) − (D + E)]
(2) Out of the four basic processes effecting population growth three leads to increase in population size
(3) For a newly colonised habitat immigration plays major role than birth rate
(4) Under normal conditions, natality and mortality are the most important factors
A population has more young individuals compared to older individuals. What would be the status of the population after some years?
1. It will decline
2. It will stabilize
3. It will increase
4. It will first decline and then stabilize
- 1(current)
Q. No.
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