Ecology Review

What are plants called in a food chain?

• Producers /Autotrophs

• Consumers /Heterotrophs

• Decomposers

• Scavengers

Why might an organism have more than one arrow coming FROM them in a food web?

• More than one organism may eat them.

• They may eat more than one other organism.

• This organism gets its energy from multiple sources.

Match the following

• This is an organism which feeds on, but usually does not kill, a larger organism

• Consumer

• This is an organism that relies on other organisms for its food and energy supply; heterotroph

• Predator

• This is an organism that breaks down and gains nutrients from dead organisms.

• Decomposer

• This is an organism that supplies matter and energy, also known as an autotroph.

• Producer

• This is an animal that lives by preying on other animals.

• Parasite

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

If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?

• 10 Kcal
• 1 Kcal
• 100 Kcal
• 1000 Kcal

Which organism recieves the least amount of energy from the producer?

• Owl
• Grasshopper
• Lilypad
• Mouse

What amount of percentage does the energy decrease as it goes up the pyramid?

• 100%

• 1000%

• 10%

• 1%

Identify this populations carrying capacity

In a forest, the carrying capacity for squirrels is about 100. If humans cut down part of the forest to build houses, what will happen to the carrying capacity for the squirrels?

• it will increase

• it will decrease

• it will stay the same

Which of the following is the best conclusion that can be made from this graph?

• atmospheric carbon dioxide levels have been decreasing since 1960
• Hawaii has a lot of carbon dioxide
• humans have been working hard to decrease carbon dioxide levels
• atmospheric carbon dioxide levels have increased steadily since 1960