Ecosystems

Which type of ecosystem contains brackish water (a mixture of fresh and saltwater)? (5.L.2.1)

• forest

• desert

• estuary

• grassland

In a forest ecosystem, which has the most direct access to the main energy source? (5.L.2.2)

• producer

• consumer

• scavenger

• decomposer

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How do decomposers recycle dead trees? (5.L.2.2)

• by releasing oxygen

• by turning them into usable chemicals in the soil

• by making them food for consumers

• by turning them into producers

Tags

NGSS.MS-LS2-3

In a food web, how are consumers most often described? (5.L.2.2)

• by their size

• by their color

• by the way they move

• by the food they eat

Which organism is a producer? (5.L.2.2)

• ladybug

• sunflower

• spider

• deer

If more frogs are introduced into a wetlands ecosystem, which will most likely happen to the number of insects in the ecosystem? (5.L.2.3)

• The number of insects in the ecosystem will increase.

• The number of insects in the ecosystem will decrease.

• The number of insects in the ecosystem will stay the same.

• The number of insects in the ecosystem will grow.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What would happen if the snakes were taken out of this food chain? (5.L.2.3)

Clover → Grasshopper → Frog → Snake → Owl

• Clover would decrease.

• Frogs would increase.

• Owls would increase.

• Grasshoppers would increase.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which way does energy flow in the food chain? (5.L.2.2)

• from the mouse to the grass to the Sun

• from the owl to the mouse to the grass

• from the mouse to the grass to the sun

• from the sun to the grass to the mouse

Tags

NGSS.MS-LS2-3

Changing ocean temperatures have led to a large decrease in the number of horseshoe crabs. Horseshoe crabs eat razor clams. Which effect will most likely occur next? (5.L.2.3)

• The razor clam population will increase.

• The sanderling population will increase.

• The striped bass and plankton populations will decrease.

• The diamondback turtle and grackle populations will decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which is a difference between abiotic and biotic factors? (5.L.2.1)

• Abiotic factors are plants and biotic factors are animals.

• Biotic factors are plants and abiotic factors are animals.

• Abiotic factors are all living things and biotic factors are all nonliving things.

• Abiotic factors are all nonliving things and biotic factors are all living things.

Tags

NGSS.5-LS2-1