What type of succession would occur in the aftermath of a volcanic eruption?
Primary succession occurs after a volcanic eruption or earthquake; it involves the breakdown of rocks by lichens to create new, nutrient -rich soils. The first species to colonize an area after a major disturbance are called pioneer species; they help to form the new environment.
Which biome is characterized by having 4 definite seasons?
Temperate deciduous forests
Which biome is characterized by permafrost and short growing season?
For most of the year, the tundra biome is a cold, frozen landscape. This biome has a short growing season, followed by harsh conditions that the plants and animals in the region need special adaptations to survive. Tundra form in two distinct cold and dry regions.
What is the biotic potential of a population quizlet?
What is biotic potential? The maximum growth rate of a population under ideal conditions, with unlimited resources and without any growth restrictions.
Which of the following will prevent a population from growing at its biotic potential?
Organisms do not tend to fulfill their biotic potential because most species do not live under ideal environmental conditions. At some point, population growth will be hindered by predators, disease, changes in environment, a lack of available food, or a combination of these factors.
What is meant by biotic potential?
Biotic potential is defined as the maximum number of individuals a species can produce.
Why pregnancy is biotic potential?
To reach its biotic potential, all females would have to become pregnant every nine months or so during their reproductive years. Also, resources would have to be such that the environment would support such growth. Neither of these two conditions exists.
What are the four factors that affect biotic potential?
These factors include unfavourable climatic conditions; lack of space, light, or a suitable substrate; deficiencies of necessary chemical compounds or minerals; and the inhibiting effects of predators, parasites, disease organisms, or unfavourable genetic changes.
What is the example of biotic potential?
There are large variations in biotic potential between species. For example, insects can have thousands of offspring every year, while large mammals are not able to reproduce as prolifically. Since ideal environmental conditions do not occur in practice, most organisms are unable to fulfil their full biotic potential.
Who gave the term biotic potential?
Components. According to the ecologist R.N. Chapman (1928), the biotic potential could be divided into a reproductive and survival potential. Full expression of the biotic potential of an organism is restricted by environmental resistance, any condition that inhibits the increase in number of the population.
What is the difference between biotic potential and reproductive potential?
The main difference between biotic potential and reproductive potential is that biotic potential is the maximum reproductive capacity of a population under optimal conditions, whereas reproductive potential is the relative capacity of a population to reproduce itself under optimal conditions.
Which of the following has the highest reproductive potential?
Chapter Eight Review
| Question | Answer |
|---|---|
| Population example that has a random dispersion | solitary snakes in a desert |
| This example could cause a large number of density-independent deaths in a population? | winter storms |
| Example of organism that has the highest reproductive potential? | bacteria |
What are the three biotic potentials?
The different biotic potentials of organisms can be attributed to several factors such as survival rate of their offspring, frequency of reproduction, and reproductive lifespan.
What factor has the greatest effect on reproductive potential?
Reproducing earlier in life has the greatest effect on reproductive potential. Reproducing early shortens the generation time, or the average time it takes a member of the population to reach the age when it reproduces.
What is an exponential growth curve?
Exponential growth is a pattern of data that shows greater increases with passing time, creating the curve of an exponential function.
What are three factors that affect reproductive potential?
Three factors are weather, disease, and human/animal destruction.
What are the three ways to increase reproductive potential which has the greatest effect?
the maximum number of offspring each member of a population can have. What are 3 ways to change reproductive potential? Producing more offspring at a time, reproducing more often, reproducing earlier in life.
How do populations change in size answers?
Over time, the growth rates of populations change because birthrates and death rates increase or decrease. Growth rates can be positive, negative, or zero. A population would remain the same size if each pair of adults produced exactly two offspring, and each of those off-spring survived to reproduce.
Why do humans have a low reproductive potential?
Exposure to environmental pollution following industrialization of the world is blamed for the decline in the adult reproductive capacity of numerous animal species and humans (Bendvold 1989; Bendvold et al.
What is a female dog’s niche?
Chapter 8 and 9
| Question | Answer |
|---|---|
| A female dog’s niche would include what? | ticks and fleas |
| If over a long period of time, each pair of adults in a population had only two offspring and the offspring lived to reproduce, the population would? | grow |
| What has the greatest effect on reproductive potential? | insects |
What symbiosis means?
Symbiosis is the interaction between two different organisms living in close physical association. A pair of commensal amphipods living on a sponge stalk. In a mutualistic relationship, both animals benefit from living together.
Which is an example of a population?
Population is the number of people or animals in a particular place. An example of population is over eight million people living in New York City.
What can occur if a population has plenty of food and space and has no competition or predators?
Final Review: Populations Ch 8 & 9
| A | B |
|---|---|
| The three properties of populations. | Size, density and dispersion. |
| The birth rate minus the death rate. | Growth rate. |
| This type of population growth occurs when there is plenty of food and space, and no competition or predators. | Exponential growth. |
What is the maximum population an ecosystem can support?
The carrying capacity of an ecosystem is the largest population that it can sustain indefinitely with the available resources, also called the “maximum load” by population biologists. Carrying capacity depends on many abiotic and biotic factors in the ecosystem and some are more obvious than others.
What are the three main properties of a population?
The three main properties of a population are Population size(number of individuals in an area), density(the number of individuals per unit or volume), and dispersion(the arrangement of its individuals).
What is the largest population that an ecosystem can support over time?
carrying capacity
What is the largest number of organisms that an environment can support and maintain?
Carrying capacity is the maximum number of individuals of one species that a particular environment can support.
Is the number of organisms an ecosystem can support?
The number of organisms an ecosystem can support depends on the resources available and abiotic factors, such as quantity of light and water, range of temperatures, and soil composition. Given adequate biotic and abiotic resources and no disease or predators, populations (including humans) increase at rapid rates.
Which is the largest population that an area can support?
Ch 4 Population Ecology Review
| A | B |
|---|---|
| Carrying capacity | the largest population size a given environment can sustainably support |
| Limiting factors | Environmental characteristics slow population growth and determine carrying capacity. |
| Biotic potential | An organism’s maximum ability to produce offspring in ideal conditions |