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PLANT TRANSPORT LECTURE

PLANT TRANSPORT LECTURE. Plants need a way to transport materials through their bodies, too. Vascular tissue – cells used by plant to transport nutrients and water. Types of Vascular Tissue. XYLEM – Dead cells that form “pipes” to carry water from roots through leaves.

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PLANT TRANSPORT LECTURE

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  1. PLANT TRANSPORT LECTURE Plants need a way to transport materials through their bodies, too. Vascular tissue – cells used by plant to transport nutrients and water.

  2. Types of Vascular Tissue XYLEM – Dead cells that form “pipes” to carry water from roots through leaves. PHLOEM – Tubes made from living cells to transport food; phloem = food

  3. Types of Vascular Tissue XYLEM – Only carries UP PHLOEM – Carries food in all directions (UP and DOWN)

  4. MONOCOTS Definition – Have only one cotyledon (embryo leaf). Example – Corn, grass, tulips.

  5. MONOCOTS LARGE CELLS ARE XYLEM Stem pattern – Scattered xylem and phloem. SMALL CELLS ARE PHLOEM

  6. MONOCOTS Root pattern – fibrous

  7. MONOCOTS Root pattern (xylem and phloem) – ring

  8. MONOCOTS Leaf pattern – veins are parallel

  9. MONOCOTS Flower pattern – parts are in multiple of 3’s.

  10. DICOTS Definition – Have two cotyledons (embryo leaves). Example – Trees, beans, carrots.

  11. DICOTS LARGE CELLS ARE XYLEM Stem pattern – Ring-shaped xylem and phloem. SMALL CELLS ON OUTSIDE ARE PHLOEM

  12. DICOTS Root pattern – taproot

  13. DICOTS Root pattern (xylem and phloem) – X-shape

  14. DICOTS Leaf pattern – veins are branched.

  15. DICOTS Flower pattern – parts are in multiples of 4’s or 5’s.

  16. MATERIALS TRANSPORTED XYLEM – WATER DISSOLVED MINERALS HORMONES PHLOEM – FOOD/SUGAR OXYGEN HORMONES

  17. GIRDLING Definition – Removing bark from a tree; fluid leaks out. Why is fluid sweet? Cutting phloem that transports sap (food). End result – Tree dies.

  18. GIRDLING

  19. HOW DOES XYLEM WORK? Successive Osmosis – Water flows high to low Soil  root hairs  epidermis  cortex  xylem

  20. HOW DOES XYLEM WORK? Cohesion of water molecules – Water is “sticky”

  21. HOW DOES XYLEM WORK? Transpiration – Leaves “sweat” water which pulls water up xylem tube. More than 90% of water absorbed is lost by leaves. Ex. Tomato plant loses 25 gallons of water per season; corn plant loses 51 gallons.

  22. HOW DOES XYLEM WORK? Turgor presure – Weight of soil pushes down on roots and squeezes water up.

  23. Monocot or Dicot? Dicot Monocot

  24. Monocot or Dicot? Dicot

  25. DICOT ROOT 1 - Epidermis 2 - Cortex Where would root hairs be? How would you know where the starch is?

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