U10- Ecosystems Test Prep Review

A prickly pear cactus takes in carbon dioxide. What is being described?

• Two organisms interacting

• An organism interacting with a non-living thing

• Two organisms competing for space

• A producer helping another producer

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A bee consumes nectar from a flower. What is being described?

• Two organisms competing for food

• A producer helping another producer

• An organism interacting with a non-living thing

• An organism depending on another organism for energy

Tags

NGSS.MS-LS2-1

Bacteria live in the digestive system of an antelope. What is being described?

• A consumer interacting with a producer

• A producer helping another producer

• An organism interacting with a non-living thing

• An organism depending on another organism

Tags

NGSS.MS-LS2-2

Which of the following does an oak tree need in order to complete photosynthesis and survive?

• Carbon dioxide

• Wind

• Predators

• Oxygen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is most important for an earthworm to survive in its ecosystem?

• Carbon dioxide

• Plastic

• Oxygen

• Sunlight

Answer explanation

Earthworms generally live underground and do not need sunlight to survive. They get their energy from breaking down dead plants/animals. They must have oxygen in order to breathe.

Tags

NGSS.MS-LS2-1

Which of the following best describes a decomposer helping plants survive?

• Fungi gets nutrients from dead tree trunks

• Fungi return nutrients to the soil, which are then used by plants

• Bacteria live on human hands

• Worms move across a sidewalk

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which of the living organisms in the table were interacting with another living organism?

• A butterfly, moss, and hawk only

• The spider and worm only

• The moss and butterfly only

• All of the organisms

Tags

NGSS.MS-LS2-2

What role do marmots play in this forest food web?

• They break down dead plants and animals

• They are primary consumers

• They produce their own energy

• They are predators of bobcats

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

A partial food web is shown. What is missing from this food web?

• decomposer

• predator

• consumer

• producer

Tags

NGSS.MS-LS2-3

How many organisms in this food web obtain energy directly from producers?

• One

• Two

• Three

• Four

Answer explanation

HINT: Count the arrows coming off of the producer in the food web

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3