Question

Which of the following is not an example of density dependent lifting factor? Territory availability Flood supply Predation

Answer 1

In nature, population size and growth are limited by many factors.

Some are density-dependent, while others are density-independent(not dependent).

Density-dependent limiting factors cause a population's per capita growth rate to change- to drop(decreasing)-with increasing population density.

For example is competition for limited food among members of a population.

When the population is small, the limited amount of food will be plenty for everyone. But, when the population gets large enough, the limited amount of food may no longer be sufficient, leading to competition among the deer. Because of the competition, some deer may die of starvation or fail to have offspring, decreasing the per capita—per individual and the growth rate and causing population size to plateau or shrink.

So,competition for food (food supply)is a density-dependent limiting factor.

Territory availability (Competition within the population)- When a population reaches a high density, there are more individuals trying to use the same quantity of resources. This can lead to competition for food, water, shelter, mates, light, and other resources needed for survival and reproduction.This so also density dependent limiting factor.

Predation- When predators eat individuals from the population, they decrease its numbers but may increase their own. since this so also density-dependent limiting factor.

Density-independent limiting factors- affect per capita growth rate independent of how dense the population is

Examples of Density-independent limiting factors -natural disasters, severe weather, and pollution.

For examples - let's consider a wildfire that breaks out in a forest where deer live. The fire will kill any unlucky deer that are present, regardless of population size. And the chance of dying an individual deer's does not depend at all on how many other deer are around.

similarly in case of flood (also natural disasters) same occurrence occur.

According to question:- option 1st is correct that is flooding, because it is not an example of density dependent limiting factors.