Structures and Functions of Plants

What makes a plant a plant?

• it has to have roots, a stem, leaves, and flowers

• it is green

• the cells!

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The prickly pear cactus has these structures that protect it from plant-eating animals.

• Gills

• Thorns or Spines

• Heart

• Stem

These structures grow out from the stem to provide leaves the best amount of sunlight. Leaves are usually on the ends.

• Roots

• Branches

• Antennae

• Heart

A desert gets all its rain during a few weeks in spring. As soon as it rains, bright 

flowers appear on all the plants. When it stops raining, the plants lose their flowers. Seeds from the flowers wait on the ground for long periods of time until the conditions are good. When it rains again, the flowers come back, and last year's seeds begin to sprout. Which conclusion should be drawn about these plants

• The desert plants grow flowers only when there is enough water.

• All the desert plants die each year so new plants can grow.

• The desert plants use their bright flowers to store some water.

• All the desert plants grow during the spring and die in the summer.

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A _____ is an organism that uses energy from sunlight to make its own food.

• animal

• chef

• structure

• plant

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Which plant parts are the tubes that carry water throughout the plant?

• xylem

• phloem

• roots

• leaves

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What plant structure is number 1?

• roots

• stem

• leaf

• flower

• seed

What plant structure is number 2?

• roots

• stem

• leaf

• flower

• seed

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What plant structure is number 3?

• roots

• stem

• leaf

• flower

• seed

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What is the job of the roots?

• to make seeds for the plant

• to make food for the plant and take in air

• to help the flower reproduce

• to support the plant and help deliver food, minerals, and water to other parts of the plant

• to anchor the plant in place, soak in water, and store food for the plant

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