Presentation is loading. Please wait.

Presentation is loading. Please wait.

EQ: How do I describe the function of the stems and roots? Page Number TopicDate 20 - 23Stems and Roots April 19.

Similar presentations


Presentation on theme: "EQ: How do I describe the function of the stems and roots? Page Number TopicDate 20 - 23Stems and Roots April 19."— Presentation transcript:

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

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

5 Layers of a Woody Stem 1.Bark 2.Phloem 3.Cambium -cells that produce new phloem and xylem 4.Active xylem 5.Heartwood- inactive xylem 6.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 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 EQ: How do I describe the function of the stems and roots?

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?


Download ppt "EQ: How do I describe the function of the stems and roots? Page Number TopicDate 20 - 23Stems and Roots April 19."

Similar presentations


Ads by Google