MOH Bio EOC Review S1 2023

Which organisms in the food web belong in the second level of consumers?

Answer explanation

The lady bug, frog, and buzzards all ate a primary consumer making them a secondary consumer.

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Which organism in the food web belong to BOTH a primary and tertiary consumer?

Answer explanation

The titmouse bird is a primary consumer when they eat berries but are a tertiary consumer when they eat the lady bug.

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What do you think will happen if the frog population decreased?

• There would definitely be less insects around because frogs are secondary consumers.

• There would definitely be more insects around because frogs are secondary consumers.

• There would definitely be more plants around because frogs are secondary consumers of insects.

• There would definitely be more snakes around because frogs are their food source.

Answer explanation

If the frog population decreased, there would be more insects around because frogs eat insects. If there are less frogs eating insects there will be less insects eaten.

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Prolonged periods of drought in an area cause decreases in plant population sizes. How would the decreases in plant populations affect the food web?

• Primary consumers are going to struggle to live because they are going to struggle finding plants.

• Secondary consumers are going to increase because they will have plenty of food.

• Tertiary consumers are going to increase because they will have plenty of food.

• Primary consumers are going to increase because they are going to find plenty of plants.

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Which organisms in the food web belong in the third level of consumer?

Answer explanation

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What do you think will happen if the phytoplankton population decreased?

• The primary consumers are going to increase and so on so forth with the secondary consumers.

• The secondary consumers are going to increase and so on so forth with the tertiary consumers.

• The primary consumers are going to struggle to live and so on so forth with the secondary consumers.

• Other producers are going to decrease because there are less consumers competing to eat them

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What animals in the food web compete for the same food? Choose all the apply.

• The penguin and the blue whale compete for the krill.

• The penguin and the seal compete for the squid.

• The blue whale and the fish compete for the krill.

• The fish and the zooplankton compete for the phytoplankton.

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What would be a factor that would cause the population of penguins to increase?

• An increase in leopard seals

• A decrease in crabs

• A decrease in blue whales

• An increase in seaweed

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Which is a possible food chain from the following information:

In the nearest park, a boy observes several squirrels living and interacting there. Many eat the acorns from the trees. The boy noticed that an eagle was flying and was hunting some of the squirrels. When the eagle dived down for a squirrel, the squirrel was able to escape.

• Squirrel --> Acorn --> Eagle

• Acorns --> Squirrel --> Eagle

• Acorns --> Eagle --> Squirrel

• Eagle -> Squirrel--> Acorns

Answer explanation

The correct food chain is Acorns -> Squirrel -> Eagle. The squirrels eat acorns, and the eagle hunts the squirrels. This chain highlights the correct choice.

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Choose the correct image for the following term:

Community

• 
• 
• 
• 

Answer explanation

Community refers to a large group of multiple populations of species, such as a park. It is the correct choice as it accurately defines the term.

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