Question

15. Give reasons:
xylem and phloem are called complex tissues
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Answer 1

Xylem and Phloem are complex because they are made different cells, with different roles. Xylem is made up of tracheids, parenchyma and xylem vessels. They conduct water and minerals up, give mechanical support and store food for the the plant and plant tissue. ... Xylem and Phloem are together called as vascular bundles.

Answer 2

xylem and pholem are called complex tissues because :

1.they are made up of more than one type of cells

2.the cells work in a coordinated manner in a unit to perform various functions. xylem are composed of four elements - tracheids,vessels,parenchyma and xylem fibres. Pholem are also composed of four elements-sieve tubes ,companion cells,pholem fibres and pholem parenchyma.

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