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Plants
Vocabulary Words for Chapter 2
6
Science
Not Applicable
11/13/2004

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Term
Root Hairs
Definition
Threadlike cells on a root that take in water and minerals from the soil. Most plants have root hairs.
Term
Epidermis
Definition
A protective layer on a leaf. It helps keep the leaf from losing water and drying out.
Term
Stomata
Definition
Pores in the bottom of leaves that open and close to let in air or give off water vapor.
Term
Transpiration
Definition
A plant's release of excess water vapor through the stomata on the underside of its leaves.
Term
Chlorophyll
Definition
A green substance in plant cells that helps plants make food by trapping the Sun's energy.
Term
Photosynthesis
Definition
A process in plants that uses energy from sunlight to make food from water and carbon dioxide.
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