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EQ: How do I describe the function of the stems and roots?

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Presentation on theme: "EQ: How do I describe the function of the stems and roots?"— Presentation transcript:

1 EQ: How do I describe the function of the stems and roots?
Page Number Topic Date Stems and Roots April 19 EQ: How do I describe the function of the stems and roots?

2 EQ: How do I describe the function of the stems and roots?
Two important functions Carries substances between roots and leaves Supports plant so leaves are exposed to the sun EQ: How do I describe the function of the stems and roots?

3 Structure of a Stem Two types of stems
Herbaceous – soft and flexible Woody-hard and rigid Both types contain phloem and xylem

4 EQ: How do I describe the function of the stems and roots?
Woody Stems EQ: How do I describe the function of the stems and roots? Bark - added layer of protection Heartwood – inner layers for additional support

5 EQ: How do I describe the function of the stems and roots?
Layers of a Woody Stem Bark Phloem Cambium -cells that produce new phloem and xylem Active xylem Heartwood- inactive xylem Pith – center of stem, stores food and water in young trees EQ: How do I describe the function of the stems and roots?

6 EQ: How do I describe the function of the stems and roots?
Annual Rings Represent one year in a tree’s growth Made of xylem Light rings grow in spring Dark rings grow in summer Two rings together make one year’s growth EQ: How do I describe the function of the stems and roots?

7 EQ: How do I describe the function of the stems and roots?
Anchor plants Absorb water and nutrients EQ: How do I describe the function of the stems and roots?

8 EQ: How do I describe the function of the stems and roots?
Types of Roots EQ: How do I describe the function of the stems and roots? 2 types Taproot – long thick root with thin roots branching off – carrot, radish, dandelion, cactus Fibrous- several main roots that branch repeatedly – lawn, corn, trees

9 EQ: How do I describe the function of the stems and roots?
Structure of Root Root cap – contains dead cells, protects root from injury Dividing cells – cause root to lengthen Root hairs – grow out of root surface – increases the surface area of the roots Cambium Vascular tissue in center EQ: How do I describe the function of the stems and roots?


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