Ecology

Ecology is

• study of the interactions between organisms and the environment

• study of organisms

• study of the environment

• study of people

Producers obtain their energy by

• the process of hunting for prey

• the process of eating plants

• the process of photosynthesis to make their own food from sunlight

• the process of breaking down once living things

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What does the illustration represent?

• A food web

• A food chain

• An ecological pyramid

• A pyramid of energy

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Living factor in an ecosystem (plants, animals).

• abiotic
• energy
• biotic
• matter

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Non living factor in an ecosystem (rocks, water, air)

• biotic
• organism
• humus
• abiotic

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The arrows in a food web represent what?

• They point to the organism that is being eaten.

• They show what direction the energy is flowing between organisms.

• It shows how sunlight flows within an ecosystem.

• They represent how water is transferred within a habitat.

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What would happen to the bird if the green fish died out?

• the bird population would grow

• the bird population would die out

• the smaller fish will die out

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In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

• 10%
• 20%
• 80%
• 90%

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Why are producers found at the base of the pyramid?

• They create all of the energy and therefore have the most energy of all of the trophic levels
• There are more plants than animals. 
• They begin the flow of energy in an ecosystem.
• All of these answers are correct. 

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What is the correct order for this food chain?

• Owl, Mouse, Grasshopper, Grass

• Grass, Mouse, Owl, Grasshopper

• Grass, Owl, Grasshopper, Mouse

• Grass, Grasshopper, Mouse, Owl

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