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Plant tissues

Plant tissues. Plant tissue. Meristematic tissues Permanent tissues. Meristematic tissues. Charecteritics Small Cubed-shaped Embryonic divide. function. Growing of the plant. locations. Shoot tip (stem apex): apical meristem Root tip: root meristem

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Plant tissues

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  1. Plant tissues

  2. Plant tissue • Meristematic tissues • Permanent tissues

  3. Meristematic tissues • Charecteritics • Small • Cubed-shaped • Embryonic • divide

  4. function Growing of the plant

  5. locations • Shoot tip (stem apex): apical meristem • Root tip: root meristem • Between vascular tissues: vascular cambium • Periderm: cork cambium

  6. Shoot tip

  7. Root tip

  8. Vascular cambium

  9. Cork cambium

  10. Permanent tissues • Simple permanent tissues: one type of cells • Compound permanent tissues: more than one type of cells

  11. Simple permanent tissues • Parenchyma • Collenchyma • Sclerenchyma • Epidermis • Endodermis • Cork • Secretory tissues

  12. Compound permanent tissue • Xylem • phloem

  13. Permanent tissues • Ground tissues: parenchyma, collenchyma, sclerenchyma. • Dermal tissues:epidermis, endodermis, cork • Vascular tissues: xylem, phloem

  14. Parenchyma • Large cells • Thin primary cell wall • Spaces between cells • Circular in shape • Storage (starch) • In stem roots and leaves

  15. collenchyma • Small • Thick primary cell wall • No spaces between cells • The spaces filled in cell wall • Below epidermis

  16. sclerenchyma • Small • Thick secondary cell wall • Rigid cell wall: sclerieds • Surround vascular tissues • fibers

  17. epidermis • Single layer of cells • Covered by cuticle (waxy material) • Covers stem, root, and leaves • Have pores ( stomata)

  18. endodermis • Single internal layer in roots • Controls the enter of water into the xylem (casparian strip)

  19. periderm • Outer covering in old plant • Consists of: • Phellim (cork) • Phelloderm (secondary cortex) • Phellogen (cork cambium)

  20. Secretory tissue In pine leaves (resin canal duct)

  21. Compound permanent tissues • Xylem • phloem

  22. xylem • Transport of water and soluble minerals from root to the leaf • Components of xylem: a) Vessel elements b) trachieds c) fibers d) wood parenchyma

  23. phloem 1.Transport of nutrient (sugars) in all directions 2. components: • Sieve tubes • Companion cells • Fibers • parenchyma

  24. Body plan of plants Flowering plants: • Monocotyledons (monocots): plants that have one storage organ in their seeds. • Dicotyledon plants (dicots): plants that have two storage organs in their seeds.

  25. Monocot stem

  26. Zea stem

  27. Zea stem

  28. Dicot stem

  29. Heliunthus stem

  30. Monocot root

  31. Dicot root

  32. Dicot root

  33. Lateral root • Lateral root originates from pericycle.

  34. Monocot leaf

  35. Monocot leaf

  36. Dicot leaf

  37. Dicot leaf

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