Structures and Functions of Living Things Study Guide

All living things need energy. Plants obtain energy to live and grow from

• eating food

• the food they produce

• soil

• human assistance

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Plant have special structures to obtain what they need. _______ allow plants to obtain the biggest quantity of carbon dioxide.

• stems

• roots

• leaves

• root hairs

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Phototropism is an example of a plant responding to its ________.

• air

• food

• environment

• people

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Coconut seeds and watermelon seeds are most alike because

• each grows into an adult

• they are both sweet

• they are both round

• the seeds are black

_______, ________, and ________ are the structures that help a plant to reproduce.

• stem

• flower

• bulb

• cone

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NGSS.4-LS1-1

Mr. Hernandez's science class learned that green plants use sunlight, water, and carbon dioxide to create their own food. _________ best explains why humans can't create their own food.

• They are slow runners

• They are always the prey

• They don't create enough calories

• Humans don't have leaves

Animals use ______ or ______ to breathe

• nitrogen

• lungs

• heart

• gills

Root hairs help plants to absorb ________.

• soil

• sugar

• water

• oil

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The senses animals use to survive in their environment are ______, ______, _______, and ______.

• sight

• smelling

• hearing

• tasting

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The shark's teeth and a bird's beak are examples of _______.

• living things

• internal structures

• sharp claws

• external structures

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