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PLANT TISSUES: VASCULAR TISSUES

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Presentation on theme: "PLANT TISSUES: VASCULAR TISSUES"— Presentation transcript:

1 PLANT TISSUES: VASCULAR TISSUES
The Circulatory System of Plants!

2 The Vascular System: For plants to survive, they must…
take in nutrients & water from environment transport water up to the leaves, and glucose back down for storage The plant’s vascular system is their “circulatory system” designed to transport materials with the plant!

3 Plant Tissues: Cells specialize to take on certain roles within the plant. Structures are formed from specialized tissues. (See Figure 1,pg. 286) Differentiation: A change in the form of cells to allow them to carry out a particular function.

4 Plant Tissues (Con’t):
Meristematic Tissue: Cells that can rapidly divide  produce all growth in plants Unspecialized cells found at the tips of stems, roots, in rings around the stems of larger plants, etc.

5 Plant Tissues (Con’t):
Dermal Tissue: Cells that protect the outer layers of a plant – epidermis is the outermost layer. These cells protect plants from disease & predators, and prevent water loss. On stems and leaves, these cells often produce a waxy cuticle. On roots, these cells have fine root hairs to aid in absorption of water.

6 Plant Tissues (Con’t):
Ground Tissue: The internal non-vascular tissues Could be specialized for storage, support, photosynthesis, etc.

7 Plant Tissues (Con’t):
Vascular Tissue: Cells that specialize in transport of water & other substances among cells Two types of tissues: Xylem Phloem

8 Vascular Tissues (Con’t):
Xylem: water-conducting cells - from roots up to rest of the plant after maturation, these cells die; leaving thick-walled, hollow cells that are pitted or open at the ends  ideal for water transfer

9 Vascular Tissues (Con’t):
Phloem: food-conducting cells - from one part of plant to another (mostly down towards roots) these living cells have large pores at their ends and share cytoplasm ideal for food transfer

10 Types of Plants: MONOCOTS DICOTS
Many vascular bundles throughout the stem DICOTS Vascular bundles arranged in a ring … some form well-developed ring with bark, etc. THE END!!!


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