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4.8 Roots

4.8 Roots. Pages 295-296. Roots. Ta Phrohm temple in Cambodia. Function. Anchor plant Absorb water and nutrients Store water and carbohydrates. Types of Roots. Taproot Fibrous roots. Tap root vs. Fibrous Root. Root hairs. Microscopic hair-like outgrowth from an epidermal cell.

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4.8 Roots

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  1. 4.8Roots Pages 295-296

  2. Roots

  3. Ta Phrohm temple in Cambodia

  4. Function • Anchor plant • Absorb water and nutrients • Store water and carbohydrates

  5. Types of Roots Taproot Fibrous roots

  6. Tap root vs. Fibrous Root

  7. Root hairs • Microscopic hair-like outgrowth from an epidermal cell. • Increase surface area for absorption

  8. Root cap • slippery substance produces allows root to penetrate soil • meristem

  9. Root Cortex • Parenchyma • Stores carbohydrate • Water passes through cortex

  10. Endodermis • Wrapped with a wax-like substance. • Form a barrier called the Casparian strip

  11. Vascular cylinder Monocot Eudicot

  12. Monocot vs. Eudicot

  13. Root Specializations • 80% of plants have mutualistic relationships with mycorrhizal fungi • Also, nitrogen-fixing bacteria such as Rhizobia are found in the root nodules of legumes

  14. Roots continued… • Tuberous roots: lateral roots used for storage • For example: yam • Adventitious root: prop root

  15. Uses of roots • Food • Medicine • Erosion control

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