Ecology 8.11ABC Review

What would be true if the rabbit population increased?

• The bacteria population will decrease

• The hawk population would increase

• There may be increases in wolves, hawks, and snakes.

• Grasshopper populations would increase

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What could be changed about the food web to make it more accurate?

• Remove bacteria because they are not in the forest

• Change arrows to go in opposite direction

• Show arrows going from all organisms to fungi and bacteria

• Draw arrows from the Sun to all organisms

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Prairie dogs live in complex tunnels underground and compete with other herbivores in the ecosystem. Which is the abiotic factor in this situation?

• Prairie dogs

• Underground habitat

• Other herbivores

• Grasses

Which abiotic factor(s) do plants compete for in order to make their own food?

• water ONLY

• sunlight ONLY

• wind ONLY

• water AND sunlight

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Which is NOT an example of an abiotic factor?

• Sunlight

• Wind

• Fungi

• Water from a stream

Which is a true statement?

• Biotic factors only rely on abiotic factors to survive.

• Abiotic factors include all living things in the ecosystem.

• Abiotic factors include sun, water, and plants.

• Biotic and abiotic factors are both necessary for a sustainable ecosystem.

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Which is the most likely outcome to the organisms in an ecosystem near the site of a nuclear disaster?

• Organisms could develop mutations in their DNA

• Animals will move to another location

• All animals will become extinct

• Animals will be impacted but plants will not

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What is the most likely adaptation for a rabbit population which once lived in the snow but now lives in shrubs and rocks due to increased global temperatures?

• They will see an increase in fur production

• They will become better swimmers

• They will grow longer ears

• Their coats will be darker

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Controlled forest fires are often used to clean up the underbrush of an ecosystem to promote a healthier ecosystem. How would they impact the organisms in the ecosystem?

• Organisms may have to temporarily move

• All organisms will die in the fire

• Only plants and trees will be impacted

• All organisms will increase in population in the first month after the fire

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How are phytoplankton similar to small trees?

• Both grow in soil

• Both conduct photosynthesis

• Both are about the same size

• Both are at the top of the food chain

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