Mortality, Natality and Dispersal

Q. Which of the following is/are an attribute for population?

1. Age pyramid
2. Mortality
3. Natality
4. All the above

Q. If N is population density at time t, then population density at time t+1 can be written as $N_{(t+1)}$ = $N_{\left(t\right)}$ + [(A+B) - (C+D)]
Select the correct option for A, B, C and D in the above equation.

1. A is mortality and B is natality
2. B is immigration and C is natality
3. C is mortality and D is immigration
4. A is natality and D is emigration

Q. The actual rate of growth of a population is the difference between the

1. population size last year and the death rate
2. number of adults and number of newborns in a population
3. birth rate and death rate
4. number of breeding and non-breeding individuals in a population

Q. Which skeleton consist of wider pelvic cavity?

1. Male
2. Female
3. None of these
4. Axial

Q. Which of the following is not true for a species?

1. Members of a species can interbreed
2. When gene pool is not fit, the species will go extinct
3. Each species is reproductively isolated from every other species
4. Individuals lost will threaten the survival of the species

Q.

What are the aspects that change the size of population?

1. Birth and migration

2. Birth, death and dispersal

3. Birth, death and immigration

4. Birth, death and emigration

Q.

Number of births per 1000 is

1. Growth rate

2. Conception rate

3. Reproduction rate

4. Crude birth rate