1. Vascular Plants with Seeds C9L3P2 Plant Tissues

2. tissue a group of similar cells working together to perform a particular function

3. A typical plant has 3 distinct kinds of tissue Dermal tissue Ground tissue Vascular tissue

4. Dermal Tissue Protection Prevent loss of water Examples: epidermis, periderm

5. Ground Tissue Metabolism Storage Support Examples: parenchyma, collenchyma, schlerenchyma

6. Vascular Tissue Transport water and sugar Examples: xylem, phloem

7. Vascular Tissue The plant’s sap-conducting tissues Two types: xylem & phloem Xylem: transports water and dissolved minerals (one kind of sap) upward (long, thick-walled cells) Phloem: transports food manufactured in the leaves (the other kind of sap) downward

8. Vascular Tissue In leaves and in non-woody plants, the xylem and phloem are usually arranged in vascular bundles (veins). Vascular bundles are often supported by thick- walled cells called fibers. Fibrovasular bundles: xylem and phloem surrounded by supporting tissues

9. Two kinds of xylem cells are tracheids and vessel elements. All vascular plants have xylem that is composed of tracheids. Tracheid cells die at maturity, leaving a hollow tube that water can flow through freely. Xylem

10. Xylem in flowering plants also includes cells called vessel elements. The end of vessel elements have larger openings than those found in tracheid cells. Water can pass through easily. Xylem

12. Another type of vascular tissue— phloem—carries dissolved sugars throughout a plant. Phloem is composed of two types of cells— sieve-tube elements and companion cells. Phloem

13. Sieve-tube elements are long, thin cells stacked end-to-end to form long tubes. A companion cell helps control the functions of the sieve- tube element. Phloem

15. Vascular Tissue

16. Xylem Phloem

17. Vascular Tissue

19. Vascular Tissue Sunflower Stem

20. Vascular Tissue