5 ATHENA ch 4 Scott Foresman 2008
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| vocabulary word |
 |
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| definition |
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| photosynthesis |
the process by which plants use light energy to make sugars |
| xylem |
tubes in vascular plants that carry water and other materials |
| phloem |
tubes in vasular plants that carry sugar away from the leaves |
| pollen |
a grain yellow powder made at the top of the stamen of a flower |
| pollination |
moving pollen fron the stamen to the pistil |
| embryo |
a new plant inside a seed |
| spore |
a tiny plant that will develop into a new plant |
| tropism |
a way that plants change their growth because of something outside of them |
| growth hormaon |
a chemical that causes more cells to grow and helps cells to grow larger |
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