Ecology

What do you think: Is planet Earth an ecosystem?

• Yes.

• No.

Where do animals get their energy from?

• From the sun.

• By eating food.

• From sleeping.

• From drinking water.

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Why are plants special?

• They are green.

• They grow out from the ground.

• They make their own food through photosynthesis.

• They have leaves.

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What do plants use to make food?

• Sunlight

• Soil

• Water

• Air

• All of the above.

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How do plants "breathe" in air?

• Through their stem.

• Through their roots.

• Through their leaves.

How do plants "drink" water?

• Through their leaves.

• Through their roots.

• Through their stem.

Plants make their own food. Plants are known as...?

• Consumers.

• Producers.

• Decomposers.

• Omnivores.

How would introducing a predator to a population of deer on an island affect the population's carrying capacity?

• Increase the carrying capacity

• Decrease the carrying capacity

• No change to the carrying capacity

• The deer would leave the island

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Non-native species are accidentally or purposefully introduced into an ecosystem that they are not originally from. What effect can they have on that ecosystem? Why?

• Reduce the biodiversity; they have no natural predators so they grow and reproduce rapidly.

• Increase the biodiversity; they have no natural predators so they grow and reproduce rapidly.

• Reduce the biodiversity; they have become food for organisms that may not have had any.

• Increase the biodiversity; they become food for organisms that may not have had any.

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Keystone species are responsible for what in an ecosystem?

• They help to support the biodiversity of an ecosystem.

• They limit the biodiversity within an ecosystem.

• They decrease the population numbers of different species.

• They are introduced to an ecosystem and eat other species to extinction.

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