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

EQ: How do I describe the function of the stems and roots?. Stems. 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?. Structure of a Stem. Two types of stems

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

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  1. EQ: How do I describe the function of the stemsand roots?

  2. Stems • 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. 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. 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. 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. 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 • 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. 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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