The principal type of complex tissues are xylem in addition to Phloem. Xylem is complex tissue in addition to is likewise called Hydrome. This is responsible for the conduction of H2O inwards the plant. Cells of xylem are heterogenous inwards construction in addition to function. Tracheids, vessels(tracheary elements), fibres in addition to parenchyma are grouped together inwards xylem. Phloem is nutrient conducting tissue. It is complex tissue, amongst sieve elements, companion cells, fibres in addition to parenchyma.
Xylem vs Phloem
Xylem1. Xylem is normally constitute deep inwards the plant
2. It conducts H2O or sap
3. In older plants, xylem oft constitutes mass of the flora body.
4. The conducting or tracheary cells are dead.
5. Xylem is made upwards of iii types of dead cells (vessels, tracheids, xylem fibres)
6. There is ane type of living cells (xylem parenchyma)
7. The conducting cells convey lignin thickening inwards the wall.
8. Conducting elements are of 2 types: vessels in addition to tracheids.
9. Tracheary elements convey dissimilar types of wall thickenings.
10. Vessels are devoid of septa
11. Xylem provides mechanical strength.
Phloem
1. Phloem is normally situated towards the outer side of the plant.
2. It conducts organic food
3. Phloem e'er forms a pocket-size component division of the flora body.
4. The conducting cells are living.
5. Phloem contains exclusively ane type of dead cells (phloem fibres).
6. There are iii types of living cells (sieve metro cells, companion cells in addition to phloem parenchyma)
7. Wall of sieve metro does non receive lignin.
8. Conducting elements are of ane type: sieve tube.
9. Wall thickenings are absent inwards the conducting channels.
10. Sieve tubes convey bulging in addition to porous septa
11. Phloem has no mechanical function.
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