How Plants and animals Use Energy Transformations pages 82-83

What is the most impressive example of energy transformations according to the text?

• Plants absorbing solar energy and converting it to chemical energy.

• Chemical energy being converted to mechanical energy in machines.

• Energy transformations in nuclear reactions.

• Energy transformations in human metabolism.

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Plants are able to absorb solar energy in the form of _______ and convert it to chemical energy.

• sunlight

• water

• oxygen

• carbon dioxide

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According to the text, what does the chemical energy in plants help sustain?

• The plant's growth

• Our growth when we consume the plant

• The growth of animals

• The growth of bacteria

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Plants contribute to the oxygen we breathe by:

• absorbing carbon dioxide and releasing oxygen during photosynthesis

• absorbing oxygen and releasing carbon dioxide

• absorbing nitrogen and releasing oxygen

• absorbing oxygen and releasing nitrogen

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The diagram shows photosynthesis. Which best describes this process?

• chemical reaction

• mechanical operation

• biological process

• mathematical calculation

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What happens to the chemical energy when an animal eats a plant?

• It is completely lost.

• It is converted into solar energy.

• It is stored in the animal's body.

• It is converted into light energy.

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A food web is a complex network of interconnected food chains in an ecosystem. What does a food web represent?

• The flow of energy and nutrients through different organisms

• The migration patterns of animals

• The water cycle in nature

• The process of photosynthesis

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In the Cross Timbers ecosystem of Oklahoma, what do all the pathways in the food web trace back to?

• The sun

• Water sources

• Soil nutrients

• Animal waste

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What are the two main things plants get from the earth?

• Air

  (Carbon dioxide)

• soil

• water

• Air

  (oxygen)

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The Process that plants use to make their food?

• Photosynthesis

• osmosis

• cell regeneration

• predator and prey

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