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PLANT TISSUES: VASCULAR TISSUES

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

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PLANT TISSUES: VASCULAR TISSUES

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  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 • 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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