Structures and Functions of Plants and Animals

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21 Terms

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adaptation

A physical trait or behavior that helps an organism survive in its environment.

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response

The reaction or change in behavior.

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transpiration

The release of water vapor mainly through small openings in the underside of leaves.

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tropism

A plant's response to water, gravity, light and touch.

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stimulus

A change in an environment that causes a response.

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internal structures

Systems found inside an organism's body that have specific functions.

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external structures

Structures that are part of the outside of the body

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Plants get their energy from _______________________

the food they produce.

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Phototropism

A plant's response to light.

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Why can't humans produce their own food?

Humans don't have leaves.

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What do fish use to breathe?

gills

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What internal structure helps humans and animals to breathe?

lungs

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The ____________ of a plant makes most of its food.

leaves

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Which senses do animals use to survive in their environment ?

sight, smell, hearing, taste

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Wolf's teeth, Bird's feet, Bear's claws, and Bunny's ears are all examples of ________________________________________.

external structures

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Camoflauge

An adaptation that allows an organism to blend in with its environment

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Mimicry

Ability of an animal to look like, or imitate, another more harmful animal

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What are the basic needs of plants?

sunlight, water, space, food

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Why do plants found in hot, dry areas have smaller leaves than plants found in warm, wet areas?

Smaller leaves limit the transpiration that occurs

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What is a big role does that the stem of a plant plays?

The stem supports the plant.

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How do tropisms benefit plants?

They help plants get what they need.