Question

Differentiate between xylem and phloem.

Accepted Answer

Characteristic Xylem Phloem

Function A vascular tissue that transports water and minerals from roots to the other parts of the plant. A vascular tissue that translocates food from leaves to the other parts of the plant.

Characteristic Xylem Phloem

Direction of flow The movement of water by this tissue is carried out unidirectionally. Phloem carries food bidirectionally from leaves to storage parts and from the storage parts to growing parts.

Characteristic Xylem Phloem

Elements Except for xylem parenchyma, all the three elements of xylem (i.e., tracheids, vessels and fibres) are dead. Except for phloem fibres, all the three elements of phloem (i.e., sieve tubes, companion cells and phloem parenchyma) are living.

Characteristic Xylem Phloem

Cell wall Cell walls are thick, and it is made up of lignin. Hence, it gives the rigidity to plants. Cell walls are thin, and it is made up of cellulose.

E.R.Harrison Solutions for Chapter: Tissue, Exercise 4: EVALUATION

E.R.Harrison Biology Solutions for Exercise - E.R.Harrison Solutions for Chapter: Tissue, Exercise 4: EVALUATION

Questions from E.R.Harrison Solutions for Chapter: Tissue, Exercise 4: EVALUATION with Hints & Solutions

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