Functions of Phloem Tissue in Plants
Functions of Phloem Tissue
Phloem tissue perform following functions in plants
- 1. Transportation of food and nutrients from leaves 🌿 to storage organs and growing part's of plants 🌱. This movement of substances❄ is called translocation.
- 2. Bidirectional (move up👆 or down 👇 the plants🌱 stem 🌿 "source to sink").
- 3. Found in roots, stem🌿 and leaves 🍃. Transport sucrose to growth (roots🌿 and shoots) and storage region of the plant🌱 (seed fruit🍏 and swollen roots)
- 4. Forms vascular bundles with xylem 💧.
- 5.🌱 Elongated, tubular shape with thin walled sieve tubes. The sieve tubes have pores at each end in the cross wall.
- 6. Sieve tubes, companion cells❄, phloem parenchyma🏵 are found in them.
- 7. Their walls are composed of cellulose 🌾.
- 8. Living tissue🎄 with little cytoplasm but no nucleus.
- 9. Phloem is not star 🌟 - shaped .
- 10. Phloem🌳 occurs on outer side of the vascular bundle.
- 11. Translocation occurs by pressure flow⚡ mechanism.
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