Ecology Practice Test

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What do we call the movement of organisms into a given area from another area?

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What plant species in the figure below represents a pioneer species if the area is undergoing primary succession?

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Which of the following is a density-independent limiting factor?

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Which part of the graph represents exponential growth for the population?

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The graph represent ___ growth, and rabbits are _ reproductive strategists.

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If the humans eliminate a predator, how would this initially affect the number of prey animals?

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Which of the following in not one of the factors that plays a role in population growth rate?

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Which statement best describes the fruit fly population in the part of the curve labeled X in the graph shown in the figure below.

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Which meadow has the greatest biodiversity?

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The human population experienced exponential growth after....

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What is one difference between primary and secondary succession?

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When individuals in a population reproduce at a constant rate, it is called...

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Why does the white-tailed deer population drop when carrying capacity is exceeded?

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The graph shows the average number of rabbits and coyotes in an area over time. Which conclusion is best supported by these data?

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A herd of deer lives in an area of Northwest Ohio between two major interstate highways. As the population continues to grow, several deer die from starvation. This example in which type of limiting factor?

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When organisms move out of the population, this is known as ....

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From the graph, determine which time period are birth and death rate equal?

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There are 150 Saguro cactus plants per square kilometer in certain area of Arizona desert. To which population characteristic does this information refer?

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The graph shows the interactions of two populations. Population A is made up of living animals. The members of population B feed on these animals. The members of population B are most likely...

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An undisturbed squirrel population grows until its carrying capacity is reached. Which of the graphs below best resembles this squirrel population?

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The graph below shows the interaction of the wolf and moose populations on Isle Royale. If the moose population continues to decrease, the wolves' food supply will decrease. What will most likely happen to the wolf population as a result?

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What must occur in a population in order for it to grow?

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Which of the following has caused the human population growth rate to increase?

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The table shows how several different populations have changed over a one year time span. Look at each population and determine which population has had an overall increase?

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On what trophic level would you find organisms that use the sun's energy directly to make their own food?

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The ultimate source of energy for all organisms in life is:

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An animal that only eats the flesh of another animal is called a:

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In the following food chain, which organism is the secondary consumer? grass ------> rabbit -------> snake ------> hawk

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In the above food chain, the snake is an example of a:

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Which of the following organisms is an autotroph?

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The image represents what type of relationship?

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In the terrestrial food web above, what would be the effect of a farmer introducing a rat poison into the ecosystem that is toxic to rats and mice?

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Which of the following is an abiotic factor in an ecosystem?

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Sea anemones contain a venom that is used to sting and paralyze their prey. The clownfish contains an enzyme in their scales that makes them immune to the venom. This allows them to freely live in the sea anemone without being harmed providing the clownfish with protection. This is an example of what type of relationship?

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Lichen is a symbiotic decomposer that attaches itself to trees and slowly breaks them down. They obtain nutrients from the tree, allowing them to survive and reproduce while the tree slowly dies. What type of relationship is this?

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Mushrooms and other fungi are responsible for breaking down dead organic matter. In the ecosystem, they are called:

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The amount of energy that is passed from one organism to the next in a food chain is:

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In an energy pyramid, the bottom level represents:

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In an energy pyramid, the lowest level has:

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Decomposers are important to ecosystems because they:

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All the following are examples of limiting factors for a population EXCEPT:

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As populations grow individuals tend to compete for

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An animal that eats only plants is a:

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Which of the following is an example of an ecosystem?

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The plant receives 3456.8 kcal of energy from the sun. How much energy will the snake end up with? kcal of energy.

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Biomagnification is when toxins, such as mercury and DDT, increase in the amount present in an organism as you move up in the food chain/web.

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Which organism in the food chain would contain the highest levels of DDT poisoning?

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Two closely related species of birds live in the same tree. Species A feeds on ants and termites, while species B feeds on caterpillars. The two species coexist successfully because

9th grade Biology Test sobre Ecology Practice Test, creado por Jessica Dewald el 17/02/2019.

Ecology Practice Test

What do we call the movement of organisms into a given area from another area?

What plant species in the figure below represents a pioneer species if the area is undergoing primary succession?

Which of the following is a density-independent limiting factor?

Which part of the graph represents exponential growth for the population?

The graph represent _____ growth, and rabbits are ___ reproductive strategists.

If the humans eliminate a predator, how would this initially affect the number of prey animals?

Which of the following in not one of the factors that plays a role in population growth rate?

Which statement best describes the fruit fly population in the part of the curve labeled X in the graph shown in the figure below.

Which meadow has the greatest biodiversity?

The human population experienced exponential growth after....

What is one difference between primary and secondary succession?

When individuals in a population reproduce at a constant rate, it is called...

Why does the white-tailed deer population drop when carrying capacity is exceeded?

The graph shows the average number of rabbits and coyotes in an area over time. Which conclusion is best supported by these data?

A herd of deer lives in an area of Northwest Ohio between two major interstate highways. As the population continues to grow, several deer die from starvation. This example in which type of limiting factor?

When organisms move out of the population, this is known as ....

From the graph, determine which time period are birth and death rate equal?

There are 150 Saguro cactus plants per square kilometer in certain area of Arizona desert. To which population characteristic does this information refer?

The graph shows the interactions of two populations. Population A is made up of living animals. The members of population B feed on these animals. The members of population B are most likely...

An undisturbed squirrel population grows until its carrying capacity is reached. Which of the graphs below best resembles this squirrel population?

The graph represent ___ growth, and rabbits are _ reproductive strategists.