Energy in Ecosystem '25

In a food web, each ____________ depends on the trophic level below it for energy.

• consumer

• producer

• decomposer

• detritivore

Tags

NGSS.MS-LS2-3

A species of rabbit lives in a meadow where grass plants are readily available during summer months. The rabbits do not stray far from the meadow because the plants supply food and protection from predators. One summer, a fire destroys the plants in the meadow. As a result of the absence of plants in the meadow, the rabbit population will probably...

• decrease in size

• increase in size

• increase reproduction

• turn carnivorous

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

What happens to the amount of available energy in the pyramid as it moves up through the different levels?

• it increases

• it decreases

• it remains the same

• it decreases, then increases

Tags

NGSS.MS-PS3-2

In any food web, the organisms that are responsible for converting raw energy into usable chemical energy are collectively called ________ while organisms that recycle the nutrients trapped in dead organisms are collectively called ________.

• producers;consumers

• producers; decomposers

• heterotrophs; consumers

• heterotrophs;autotrophs

Tags

NGSS.5-LS2-1

Producers are also autotrophs

• True

• False

In an ecosystem, a fungus, such as the mushroom, functions as a

• consumer

• heterotroph

• decomposer

• predator

Look at the diagram of the food web.

What will happen if the number of snakes goes down?

• The owl will eat the grass

• The number of frogs will go down

• The hawk and owl will have less food

• The number of mice and grasshoppers will go up.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Starting with a producer, ending with a tertiary consumer, which food chain correctly describes the flow of energy in an ecosystem?

• grass → grasshopper → fish → human

• grasshopper → fish → human

• human → fish → grasshopper

• human → grasshopper → fish → grass

Tags

NGSS.MS-LS2-3

Which organisms would provide energy for the hawk?

• rabbit, shrew, and snake

• rabbit, snake, and grasshopper

• shrew, snake, and insect eating bird

• grass, rabbit, and insect eating bird

Tags

NGSS.MS-LS2-3

Something important is missing from this food web! The grass starts this food web. But the plant's energy comes from __________, the one picture that is missing from the food web.

• water

• the sun

• the air

• the soil

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6