Energy Transfer in Ecosystems

All organisms must obtain energy from their environment. Every organism needs this energy in order to grow and reproduce. How do producers obtain energy

• They obtain energy by eating plants, bacteria, and algae.

• They extract chemical energy from decaying organic matter.

• They extract energy from the chemicals in soil, air, and water.

• They capture energy from sunlight and manufacture their own food.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Each organism has its own role in a food web. Organisms can be producers, consumers, or decomposers. Which of these organisms can be classified as a decomposer?

• Turtle

• Bee

• Sunflower

• Mushroom

Two types of global food webs show the feeding relationships of organisms. What distinguishes one type of global web from the other?

• whether the producers are located on land or in water

• whether or not the food web includes tertiary consumers

• whether the web includes animals that migrate during the year

• whether the ecosystem described by the web is localized or very broad

A student is identifying food chains in diagram of a food web. Which of the following organisms might be a tertiary consumer?

• frog

• redwood tree

• great white shark

• athlete’s foot fungus

Tags

NGSS.MS-LS2-3

Which of the following consumers is a herbivore?

• cat

• horse

• human

• vulture

Herbivores, carnivores, and omnivores are all types of

• producers

• consumers

• decomposers

• parasites

____________________ is the process by which light energy from the sun is converted to food.

• osmosis

• inertia

• photosynthesis

• decomposition

Tags

NGSS.MS-LS1-6

What is the primary role of decomposers in an ecosystem?

• control the population of producers and consumers

• compete with producers for energy and other resources

• provide a source of energy for the producers

• recycle energy and materials from dead organisms

Tags

NGSS.MS-LS2-3

A diagram that shows the amount of energy that moves from one feeding level to another is termed..

• energy pyramid
• adaptation
• autotroph
• food web

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

About how much percent of energy is passed on from one organism to to the next on a food web pyramid. 

• 100 percent of all energy gets passed
• 45 percent of all energy gets passed
• 10 percent of all energy gets passed
• 0 percent of all energy gets passed

Tags

NGSS.MS-LS2-3