Free Printable Biology EOC RC 5

Worksheets

Biology EOC RC 5

Total questions: 20

Worksheet time: 22mins

Name

Class

Date

A pond ecosystem is shown in the diagram below. Which statement describes an interaction that helps maintain the dynamic equilibrium of this ecosystem?
Which statement describes an interaction that helps maintain the dynamic equilibrium of this ecosystem?

The frogs make energy available to this ecosystem through the process of photosynthesis.

The algae directly provide food for both the rotifers and the catfish.

The green-backed heron provides energy for the mosquito larvae.

The catfish population helps control the populations of water boatman and waterfleas.

According to the food web, which of these supply energy for all the other organisms?

snakes

insects

grasses

cougars

Deforestation by burning has been described as a "double whammy" to the environment, meaning it has 2 negative impacts. Why is this description accurate?

Forest burning releases CO₂ while decreasing oxygen, which disrupts cycles

Deforestation reduces the amount of oxygen in the atmosphere, which depletes the ozone layer

Forest clearing is often followed by land development, which often leads to increased noise pollution

Deforestation increases the number of plant and animal species by destroying habitat

The number of species within a specific habitat.

Conservation

Sustainable development

Biodiversity

Preservation

What is happening at 1?

respiration: releasing CO2

decomposing CO2 in the soil

photosynthesis: absorbing CO2

turning CO2 from the atmosphere into organic molecules

Which organism recieves the least amount of energy from the producer?

Owl

Grasshopper

Lilypad

Mouse

The recycling of matter in ecosystems requires the breakdown of dead organic matter. This is accomplished by

decomposers

primary consumers

secondary consumers

primary producers

In the food chain, how much energy will make it to the trophic level of the sharks if the producers have 100,000 calories?

10 calories

1 calorie

100 calories

1,000 calories

How does the growth of hardwood trees affect the organisms in an ecosystem?

grasses become fewer because the trees take up the light

Trees provide shelter for a variety of mammals, birds, insects, etc.

In autumn, the falling leaves provide nutrients for decomposers

All of the above

10.

Why does secondary succession have more species diversity than primary succession?

There is no species diversity.

Secondary succession has more species diversity due to the lack of soil.

Secondary succession has more species diversity due to the microorganisms that survived in the soil.

Primary succession ALWAYS has more species diversity.

11.

Phytoplankton blooms cause deadzones in bodies of water. Sewage, fertilizers, and burning of fossil fuels increase the phytoplankton levels. Which of the following increases dead zone levels?

rain runoff

clean water plant

farming without fertilizers

Using windmills instead of coal burning factories

12.

The overgrowth of algae poses a major problem for coral reefs. Intensive fishing is one factor that contributes to algae overgrowth because it does which of the following?

Allows more sunlight to be available to algae

Inhibits the spread of pathogens in algae colonies

Reduces the number of organisms that feed on algae

Increases the competition between different algae species

13.

Which of the following are missing from the food web shown above?

producers

decomposers

omnivores

carnivores

14.

A student is studying the ecology of a playa lake, which forms after a rainfall in a dry lake bed. The table lists the organisms that the student observed.
Which level of biological organization has the student described in the table?

Biosphere

Organelle

Ecosystem

Community

15.

The acacia ant (Pseudomyrmex ferruginea) lives in the bullshorn acacia plant, as shown above. The acacia ant nests and feeds in the plant’s hollow thorns. The ant helps protect the bullshorn acacia by attacking insects and grazing animals that come near the plant. The relationship between the acacia ant and the bullshorn acacia is an example of which of the following?

Commensalism

Mutualism

Neutralism

Parasitism

16.

According to the graph shown, what effect did the brown tree snake have on the birds in Guam?

The snakes had no effect on the bird populations.

The snakes caused a decline in the number of bird populations.

The snakes formed a mutualistic relationship with the birds.

The snakes caused an increase in the number of bird populations.

17.

What are the Abiotic factors in this image?

water, sunlight, dirt, air

birds and plants

birds, water, dirt

plants, water

18.

A prey population consists of individuals with a variety of running speeds.

The adaptation that allows some of these animals to run fast would be an example of natural selection if it helps them —

survive and undergo mutations in their DNA

lower the mortality rates of the population

produce offspring that run at average speeds

reproduce and increase the frequency of their genes in the population

19.

The amount of energy the producers in this energy pyramid provide the primary consumers is 54,000 joules. From this amount, 540 joules are provided to the tertiary consumers.

Based on this model, how much of the energy was provided to secondary consumers?

53,460 J

5,400 J

540 J

54 J

20.

Which of the following is most likely to cause the greatest disruption to an ecosystem?

Emptying an aquarium containing non-native species into a local waterway

Cutting down a small cedar tree to make holiday decorations

Cleaning the windshield of a car with an alcohol-based glass cleaner

Mowing the lawn in a city park

Reset

Biology EOC RC 5

Total questions: 20

Worksheet time: 22mins

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