Ecological pyramid and energy flow

Organisms that make their own food

• Producer

• Consumer

• Decomposer

What is the source of all energy?

• the sun

• water

• plants

• oxygen

An organism that gets energy from eating other organism is --

• a producer

• a habitat

• a consumer

• photosynthesis

what should you say when you see an arrow in a food chain or food web?

• direction of energy flow

• eaten by

• consumption of organism

• all of the above

An interconnected set of food chains is a(n)

• food chain

• food web

• ecosystem

• photosynthesis

Fungi, like mushrooms, are considered decomposers. What is a decomposer's role in a food web?

• to give off carbon dioxide

• to help plants with photosynthesis

• to break down waste and dead organisms

• to make their own food using sunlight

When energy is passed in an ecosystem from one trophic level to the next, only ___ percent of the energy will be passed on.

• 1

• 10

• 100

• 50

Select all the biotic factors from the list.

• Water

• Turtle

• fish

• Grasses

• Sun

If only 10% of the energy in the pyramid is available as you move from one trophic level to the next, what happens to the other 90%?

• Passed on to decomposers

• loss through respiration, excretion and egestion

• Assembled into tissues of producers permanently

• reused again

If you constructed a food chain, what role does the plant play?

• Producer

• Primary Consumer

• Secondary Consumer

• Tertiary Consumer