7.12A Energy Pyramid Reviwew

How does energy flow through an ecosystem?

In an ecosystem, energy flows from ​ (a)   to ​ (b)   . The ​ (c)   are at the base of the energy pyramid because they make their own food using sunlight. As energy moves up the pyramid, the amount of energy available ​ (d)   because each organism uses some energy for its own life processes.

• producers
• consumers
• increases
• decreases
• stays the same

What role do decomposers play in the ecosystem?

• They produce energy from sunlight.

• They eat primary consumers.

• They break down dead plants and animals.

• They are at the top of the energy pyramid.

What is a food web?

• a diagram that shows the feeding relationships between organisms in an ecosystem

• a triangular diagram that shows an ecosystem's loss of energy

• an organism that can make its own food by using energy from its surroundings

• the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms

Classify each type of organism by its role in the ecosystem.

Groups:

(a) Producers

,

(b) Consumers

,

(c) Decomposers

• algae
• rabbit
• slugs
• eagle
• tiger
• lion

• bacteria
• oak tree

• sunflower
• shark
• fungi
• maple tree
• corn
• earthworm

• mushrooms

Match each organism to its role in the food chain.

• primary consumer

• snakes

• secondary consumer

• hawk

• tertiary consumer

• grass

• producer

• rabbit

The diagram shows energy flow in a prairie ecosystem.

Kendra’s class learned about the roles of different organisms in an ecosystem. They made a chart with some different organisms and their roles.

• producer

• prairie dog

• secondary consumer

• coyote

• tertiary consumer

• ferret

• primary consumer

• grass

Which statements are true about energy pyramids? Circle TWO correct answers.

• Energy increases as it moves up the pyramid.

• Producers are at the base of the pyramid.

• Tertiary consumers have the most available energy.

• Energy decreases as it moves up the pyramid.

What happens to energy as it moves through trophic levels? As energy moves through trophic levels, it ​ (a)   . This is because each organism uses some energy for ​ (b)   . Only about ​ (c)   % of energy is passed from one trophic level to the next.

• decreases
• life processes
• 10
• increases
• 50

What is the role of decomposers in an ecosystem, AND why are they important for the energy cycle?

How does energy flow through a food chain, AND what happens to the amount of energy available as it moves up the food chain?