Unit: Energy Flow #2

In the food web, the insectivorous birds would be classified as

• carnivores

• decomposers

• herbivores

• omnivores

In the food web to the right, what would be a direct impact of an increase in the amount of toads in the ecosystem....

• an increase in the population of squirrels

• a decrease in the population of owls

• an increase in the population of snakes

• a decrease in the rabbit population

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Organisms that use energy from the sun to make their own food are called

• carnivores

• consumers

• omnivores

• producers

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What will MOST LIKELY happen if a new producer is introduced into a food web?

• The omnivores will decrease.

• The herbivores will increase.

• The carnivores will decrease.

• The decomposers will decrease.

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The figure to the right shows a trophic pyramid for an ecosystem. What happens to the amount of energy in the pyramid as it moves up through the different levels?

• Energy increases by 10% each level

• Energy decreases by 90% each level

• Energy decreases by 10% each level

• Energy increases by 90% each level

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In food chains, the flow of energy is ALWAYS _________.

• one-way

• reversible

• two-way

• uncontrolled

The following organisms make up a food chain: algae → fish → bear. If you were to place the bear into the trophic pyramid to the right, the bear would go on level _____ and have ________ amount of energy available to it.

• A; the least

• C; the least

• A; the greatest

• B; an intermediate

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The purpose of photosynthesis is to

• make ATP for humans

• build proteins in plants

• store solar energy as sugar

• A and C

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In which organelle does photosynthesis occur?

• Mitochondria

• Chloroplast

• Lysosome

• Nucleus

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NADPH and ATP are produced during what part of photosynthesis?

• light-dependent

• light-independent

• Calvin Cycle

• Mitochondria

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