What is phloem? Write its components and function.
What is phloem? Write its components and function.
- Phloem is the chief conducting tissue of organic solutes.
- It is composed of 4 elements
- Sieve tube
- Companion cells
- Phloem parenchyma
- Phloem fibers
3. Sieve tubes are long tubular live structures made up of long sieve tube elements. The end walls have numerous perorations.
4. Sieve tubes are associated with other kind of living cells called companion cells. Both cells arise from same initials cells thus forming a single functional unit.
5. Living parenchymatous cells present in phloem is known as phloem parenchyma.
6. Companion cells are cells that are associated sieve tubes.
7. Both cells arise from same initials cells thus forming a single functional unit.
8. Companion cells contain all the essential cellular contents like mitochondria, nucleus, endoplasmic reticulum etc. They lose their nucleus on maturity.
9. Phloem fibers are dead sclerenchymatous fibers seen in phloem.
- Phloem is the chief conducting tissue of organic solutes.
- It is composed of 4 elements
- Sieve tube
- Companion cells
- Phloem parenchyma
- Phloem fibers
3. Sieve tubes are long tubular live structures made up of long sieve tube elements. The end walls have numerous perorations.
4. Sieve tubes are associated with other kind of living cells called companion cells. Both cells arise from same initials cells thus forming a single functional unit.
5. Living parenchymatous cells present in phloem is known as phloem parenchyma.
6. Companion cells are cells that are associated sieve tubes.
7. Both cells arise from same initials cells thus forming a single functional unit.
8. Companion cells contain all the essential cellular contents like mitochondria, nucleus, endoplasmic reticulum etc. They lose their nucleus on maturity.
9. Phloem fibers are dead sclerenchymatous fibers seen in phloem.
