Ecosystems Review

What will most likely happen to the foxes and the wolves if the rabbits are removed?

• The foxes will eat more wolves
• The foxes will eat fewer wolves
• There will be more foxes and wolves
• There will be fewer foxes and wolves

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Sea otters move into the ocean bay. They eat all of the sea urchins. This will cause a change in the 

• kelp to have less food
• crabs to have more food
• sea ducks to have less food
• arctic foxes to have more food

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

Decomposers are important in a food chain because they 

• produce their own food using light from the sun
• break down the dead organisms and recycle nutrients into the soil
• stop the flow of energy from one organism to the other
• are microscopic and other organisms cannot consume them

Tags

NGSS.MS-LS2-3

Which of the following sets of organisms would be found in an ecosystem

• tortoise, lizard, fly
• salamander, mosquito, frog
• mouse, seal, lemming
• lion, giraffe, beetle

The zooplankton in this food chain are

• primary producers
• primary consumers
• secondary consumers
• tertiary consumers

Tags

NGSS.MS-LS2-3

If additional wrens are introduced to into this ecosystem, there will most likely be a decrease in the

• frog population
• falcon population
• snake population
• grasshopper population

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What is the source of energy for the algae?

• waves
• sunlight
• bacteria
• rotifers, waterfleas, and tadpoles

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

The producers at the start of a food chain are

• small animals
• predators
• green plants
• insects

Tags

NGSS.MS-LS2-3

Which group is not represented in the food web?

• producers
• primary consumers
• secondary consumers
• decomposers

Tags

NGSS.MS-LS2-3

Approximately how much energy is available to the secondary consumers in this pyramid?

• 10 kcal/m2/year
• 100 kcal/m2/year
• 1,000 kcal/m2/year
• 5,000 kcal/m2/year

Tags

NGSS.MS-LS2-3