question_answer

    Why are xylem and phloem called complex tissue? How they different from one another?           (2)

Answer:

                  Xylem and phloem are made up of more than one type of cell, which coordinate to perform a common function. So, they are called complex tissue.                                               (1) Difference between xylem and phloem

Xylem	Phloem
It conduct water and minerals from roots to aerial parts of plants.	It translocates prepared food from leaves to storage organs and growing parts of body.
If provides mechanical strength to plant.	It does not provide mechanical strength to the plant.
Only xylem parenchyma are living cells.	Sieve tubes, companion cell and phloem parenchyma are living.

 (2)