What is the primary source of energy for most ecosystems?

• The Moon

• The Sun

• The Ocean

• The Wind

Tags

TEKS.SCI.7.12A

Which of the following best describes the role of producers in an ecosystem?

• They decompose organic material.

• They convert solar energy into chemical energy.

• They consume other organisms for energy.

• They compete for resources with other organisms.

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TEKS.SCI.7.12A

How does the amount of available energy change as you move up the trophic levels in an energy pyramid?

• It increases.

• It remains the same.

• It decreases.

• It fluctuates randomly.

Tags

TEKS.SCI.7.12A

If a new predator is introduced into an ecosystem, what is a possible impact on the prey population?

• The prey population will increase.

• The prey population will decrease.

• The prey population will remain unchanged.

• The prey population will become extinct immediately.

Tags

TEKS.SCI.6.12A

Describe how a decrease in sunlight availability might affect an aquatic ecosystem.

• Increase in producer population

• Decrease in producer population

• No effect on the ecosystem

• Increase in consumer population

Tags

TEKS.SCI.6.12A

What happens to the energy that is not transferred to the next trophic level in an energy pyramid?

• It is destroyed.

• It is converted into matter.

• It is lost as heat.

• It is stored indefinitely.

Tags

TEKS.SCI.7.12A

In a forest ecosystem, if the population of herbivores increases, what is a likely consequence for the producers?

• Increase in producer population

• Decrease in producer population

• No change in producer population

• Producers will become carnivorous

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TEKS.SCI.6.12A

How might an increase in water availability affect a desert ecosystem?

• Decrease in plant diversity

• Increase in plant diversity

• No change in the ecosystem

• Decrease in animal diversity

Tags

TEKS.SCI.6.12A

In the energy pyramid, the organism with the least amount of energy available is the (a)   .

• Producers
• Herbivores
• Carnivores
• Top Predator

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Match the following terms with their definitions in an ecosystem:

• Primary consumers

• Carnivores

• Consumers that eat both plants and animals

• Herbivores

• Organisms that break down dead material

• Decomposers

• Secondary consumers

• Omnivores

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3