OST Science Released Questions Life Science 1

Which aquarium design show organisms that fill all the roles in a complete food chain?

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Which statement describes the way bees interact with flowers?

• A flower makes seeds that bees use for energy.

• Bees produce honey that flowers can use for energy.

• Flowers provide places for bees to hide from predators.

• Bees help flowers reproduce by carrying pollen to other flowers.

Scientists study hippopotamusses (hippos), ticks and carps (a type of fish) living in a river ecosystem. The hippos eat grasses. The ticks live on the skin of the hippos and feed on their blood. The carp eat the ticks and the algae.

While studying the ecosystem, ecologists have noticed that the number of carp in the river has increased.

Which graph shows the change in the number of ticks due to the increase in carp. The beginning population is plotted on the graph.

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Use the chart to show the flow of energy in the Lake Eerie ecosystem.

• snails, alewife, white bass

• bacteria, algae, mussels, round goby

• sun, algae, mussels, round goby

• algae, mussels, round goby

Organize these options into the right categories

Groups:

(a) producer

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(b) consumer

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(c) decomposer

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(d) apex predator

• common carp

• white bass

• algae

• bacteria

• mussels

The table shows some animals that live in the alpine tundra ecosystem.

Which diagram shows how energy flows in this ecosystem?

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What does the word "simulation" mean?

• the process of combining different elements into a whole

• an organism that breaks down dead plants and animals

• the act of pretending or imitating something

• the process of creating something new by combining different ideas

What does the word "synthesize" mean?

• the process of combining different elements into a whole

• an organism that breaks down dead plants and animals

• the act of pretending or imitating something

• the process of creating something new by combining different ideas

How do organisms interact with one another?

• through photosynthesis

• Through hibernation and migration

• through communication and cooperation

• by breaking down complex substances into simpler one

What is the definition of the word "decomposer"?

• a process of using data to answer questions and draw conclusions

• An organism that breaks down dead plants and animals

• the act of pretending or imitating something

• the process of creating something new by combining different ideas