Matter and Energy in Ecosystems

Which of the following means water leaving a plant's leaves as a gas?

• Evaporation

• Condensation

• Precipitation

• Transpiration

Tags

NGSS.MS-ESS2-4

What is a decomposer?

• an organism that breaks down dead organisms for energy

• an organism that makes its own food

• an organism that eats other organisms

Tags

NGSS.MS-LS2-3

True or False:

A food web shows how energy flows through an ecosystem

• true

• false

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What do the arrows in a food web show?

• who is the most powerful

• the next organism that uses the energy

• the prey

• the sun

Tags

NGSS.MS-LS2-3

If humans over-hunted a population of insect-eating birds, what immediate change would likely be seen in the area?

• Increased seedling germination

• Increased populations of insects

• Migration of small mammals

• Severe loss of vegetation

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

If the population of prey increases, the population of predators will ________because of the availability of food.

• decrease

• stay the same

• increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What would most likely happen if an ecosystem no longer received sunlight?

• The number of herbivores would increase.

• The number of plants would increase.

• All organisms would adapt.

• All living organisms would eventually die.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is a producer?

• organism that cannot make their own food so they eat other organisms

• organism that makes their own food

• organism that break down dead organisms

Tags

NGSS.MS-LS2-3

Does a food chain start with the sun?

• yes

• no

What is a food web?

• a model that contains many food chains

• a model that contains one food chain

• a model that shows where the sun gets its energy

• a model that shows how decomposers break down organisms

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3