Ecosystem and Food Chain Review

What is a producer?

• an organism that gets energy from eating other organisms
• an organisms that uses sunlight to make its own food
• an organism that gets energy from eating dead organisms, non-living material or waste

An organism that gets energy from eating other organisms is a ______________

• producer
• consumer
• decomposer

Which of the following is producer/autotroph?

• rabbit

• frog

• tree

• worm

Using the food web what would happen if the eagle became extinct?

• The frog population would decrease.

• The frog population would increase.

• The butterfly population would increase.

• The snake population would decrease.

The number of organisms at the top of the energy pyramid are usually smaller because the hawk

• needs more energy

• has more predators

• have more offspring

• eat producers

What % of energy is passed from organism to organism?

• 100%

• 10%

• 5%

• 25%

Biotic means ______________.

• Living organisms.

• Non living factors.

• Living and non living factors.

• Unicellular and Multicellular

The non living parts of an ecosystem

• abiotic factors
• biotic factors
• oxygen
• soil

An abiotic part of an ecosystem; required by plants to perform photosynthesis.

• water
• soil
• sunlight
• oxygen

What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon