Populations and Resources Unit Review

Which population would be stable?

• One with more deaths than births

• One with more births than deaths

• One with no births or deaths

• One with equal births and deaths

If more organisms are born than die, what happens to the population?

• It stays the same

• It increases

• It decreases

• The population stops reproducing

Tags

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Why can a system be stable even as organisms are born and die?

• Deaths happen less than births

• The total number of organisms never changes

• Births and deaths happen equally

• Births happen less than deaths

If more organisms die than are born, what happens to the population?

• It decreases

• It increases

• It stays the same

• The population stops reproducing

Tags

NGSS.MS-LS2-4

What must happen for a population to increase?

• Equal births and deaths

• More births than deaths

• More deaths than births

• No births or deaths

Where do consumer populations get energy storage molecules?

• Sunlight

• Eating resource populations

• Soil nutrients

• Water

Tags

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Why do organisms need energy storage molecules?

• To reproduce and survive

• To protect themselves

• To increase competition

• To lower metabolism

Tags

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What happens to a consumer population when a resource population increases?

• It runs out of food

• It decreases in size

• It stops reproducing

• It gets more energy storage molecules

Tags

NGSS.MS-LS2-4

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If a consumer population gets too big, what happens?

• It creates more energy storage molecules

• It gets unlimited food

• It lowers competition

• It eats more, and its resource population decreases

Tags

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What controls how many organisms can reproduce?

• The size of the consumer population

• The number of predators

• The amount of available energy storage molecules

• The level of competition

Tags

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