2. Roots

3. Main function: –Absorb water & nutrients Transport them to the above ground plant –Anchor the plant in the ground –Some store energy as carbohydrates

4. Roots Primary root – first part to emerge out of a seed Secondary root – arises from the primary root –Seedlings transplant best when they have secondary roots already growing Root hairs – tiny hairs that absorb most of the water for the plant (increase surface area

5. Roots Root cap-tip where growth occurs. It pushes through hard soil or around a rock

6. Roots: (Internal Parts) A. Much like those of stems with phloem, cambium, and xylem layers. B. Phloem- the outer layer; carries food down the root

7. (Roots: Internal Parts Continued) C. Xylem- the inner layer; carries water and minerals up to the stem.

8. Types Of Roots A.Fibrous- many branched shallow roots; are easier to transplant. Roots are shallow. Examples: bushes and trees

9. Types of roots B. Tap- long root with few branched ones; are more difficult to transplant. Examples: Carrots, Walnut trees, dandelions