1.

Differentiate between xylem and phloem.

Answer»
   Xylem   Phloem
 1. It is a dead complex tissue. It is a living complex tissue.
 2. It is composed of xylem, tracheids, vessels, xylem fibres and xylem parenchyma. It is composed of sieve tubes, sieve cells, companion cells, phloem parenchyma and phloem fibres.
 3. It is also known as wood. It is also known as bast.
 4. The cell walls are thick due to lignin. The cell walls are thin.
 5. Xylem conducts water and minerals from roots to the stem and leaves. It also provides mechanical strength to the plant parts. It is the chief food conducting tissue of vascular plants responsible for translocation of food from leaves to other plant parts.


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