What are some conditions under which logistic growth occurs?

Logistic growth occurs when the population size increases with time but levels off after reaching a maximum which is known as the carrying capacity. Carrying capacity is fixed and is the maximum number of individuals that can be supported by a population. So, the correct option is 'a fixed carrying capacity'.

What are the conditions under which logistic growth occurs?

When resources are limited, populations exhibit (b) logistic growth. In logistic growth, population expansion decreases as resources become scarce, and it levels off when the carrying capacity of the environment is reached. The logistic growth curve is S-shaped.

What factors cause logistic growth?

As competition increases and resources become increasingly scarce, populations reach the carrying capacity (K) of their environment, causing their growth rate to slow nearly to zero. This produces an S-shaped curve of population growth known as the logistic curve (right).

What are the 4 factors that affect population growth?

When demographers attempt to forecast changes in the size of a population, they typically focus on four main factors: fertility rates, mortality rates (life expectancy), the initial age profile of the population (whether it is relatively old or relatively young to begin with) and migration.

What are the conditions for exponential growth?

When the per capita rate of increase ( r) takes the same positive value regardless of the population size, then we get exponential growth. When the per capita rate of increase ( r) decreases as the population increases towards a maximum limit, then we get logistic growth.

Exponential and logistic growth in populations | Ecology | Khan Academy

Under which of the following conditions would a population most likely experience exponential growth?

Density-independent growth is also known as exponential growth. Under which of the following conditions would a population most likely experience exponential growth? Young populations with few individuals.

What 3 characteristics are used to classify populations?

birthrate, death rate, and the rate individuals enter or leave a population. When do populations grow exponentially? Under ideal conditions with unlimited resources, a population will grow exponentially. What is the characteristic shape of a logistic growth curve?

What are the three types of population growth?

And while every population pyramid is unique, most can be categorized into three prototypical shapes: expansive (young and growing), constrictive (elderly and shrinking), and stationary (little or no population growth). Let's take a deeper dive into the trends these three shapes reveal about a population and its needs.

What is exponential growth and logistic growth?

Exponential growth is a growth in population wherein the number of individuals increases. This happens even when the rate of growth does not change. As a result, it creates an explosion of the population. Logistic growth entails exponential growth in population along with a growth rate which is in a constant state.

What causes growth to stop in logistics?

When organisms face limiting factors, they show logistic growth (S-shaped curve, curve B: Figure below). Competition for resources like food and space cause the growth rate to stop increasing, so the population levels off. This flat upper line on a growth curve is the carrying capacity.

What is the main difference between logistic and exponential growth curves?

The main difference between exponential and logistic growth is that exponential growth occurs when the resources are plentiful whereas logistic growth occurs when the resources are limited. The exponential growth is proportional to the size of the population. It is influenced by the rate of birth and the rate of death.

What are the factors that affect the distribution of population?

The main factors determining population distribution are : climate, landforms, topography, soil, energy and mineral resources, accessibility like distance from sea coast, natural harbours, navigable rivers or canals, cultural factors, political boundaries, controls on migration and trade, government policies, types of ...

What conditions could change the density of any of the population?

Deaths, births, immigration, and emigration are all processes that can impact population density at a given time.

What are the 4 major types of population distribution?

Individuals within a population can be distributed at random, in groups, or equally spaced apart (more or less). These are known as random, clumped, and uniform distribution patterns, respectively ([Figure 2]).

Which of the following is are associated with the growth of a population that occurs under ideal conditions?

The growth rate under ideal conditions is known as the biotic potential.

Under which condition would a population most likely increase?

Q. Under which condition would a population most likely increase? The carrying capacity exceeds the habitat area.

Under which condition will a population experience growth when n is less than K?

If the K and N values are similar, the amount of available resources is high. If N is less than K, the population will not grow. If the K and N values are far apart, the population will grow very slowly.

What are the 4 density-dependent factors?

Density-dependent factors include competition, predation, parasitism and disease.

What factors affect population density and distribution?

Which of the following factors is most likely to act in a density-dependent manner?

Most density-dependent factors, which are biological in nature (biotic), include predation, inter- and intraspecific competition, accumulation of waste, and diseases such as those caused by parasites. Usually, the denser a population is, the greater its mortality rate.

What are the 6 factors that affect population size?

What are three factors that affect the distribution of resources on earth?

Natural resources are unevenly distributed around the world. Some regions have plenty of certain resources but lack some others. Their location is affected by geological, biological and climatic factors.

What are the six factors that affect population density?

Physical factors that affect population density include water supply, climate, relief (shape of the land), vegetation, soils and availability of natural resources and energy. Human factors that affect population density include social, political and economic factors.

What are the two types of factors that affect population growth?

The two main factors affecting population growth are the birth rate (b) and death rate (d). Population growth may also be affected by people coming into the population from somewhere else (immigration, i) or leaving the population for another area (emigration, e).

What factors might cause the carrying capacity of a population to change?

While food and water supply, habitat space, and competition with other species are some of the limiting factors affecting the carrying capacity of a given environment, in human populations, other variables such as sanitation, diseases, and medical care are also at play.