Question

1) Which of the following models of population growth includes density dependance

a- Expotencial model

b- Geometric model

c- logistic model

d- Matrix model

e- All of the above

2) Which model assumes that individuals in the population may differ

a- Expotencial model

b- Geometric model

c- logistic model

d- Matrix model

e- All of the above

Answer 1

Answer No.1: (c) logistic model

Explanation: A group of individuals of the same species living in the same area is called a population. The measurement of how the size of a population changes over time is called the population growth rate, and it depends upon the population size, birth rate and death rate. As long as there are enough resources available, there will be an increase in the number of individuals in a population over time or a positive growth rate. However, most populations cannot continue to grow forever because they will eventually run out of the water, food, sunlight, space or other resources. As these resources begin to run out, population growth will start to slow down. When the growth rate of a population decreases as the number of individuals increases, this is called logistic population growth.

Answer No. 2: (e) all of the above

Explanation: All models of population growth tells us about the increasing population due increase in the number of individuals. Because of this increment in population, every model assumes that individuals of the population may differ.