Question

What is difference between Xylem and Phloem

Answer 1

Difference between Xylem and Phloem

Xylem	Phloem
Xylem tissues are tubular shaped structure, with the absence of cross walls. This tissue resembles the shape of a star.	Phloem tissues are elongated, tubular shaped structures that include thin sieve tubes with walls.
Xylem occupies the center of the vascular bundle.	Phloem is located on the outer side of the vascular bundle.
Xylem fibres are smaller.	Phloem fibres are larger.
They are present in leaves, stems, and roots.	They are present in leaves, roots, stems but transports and grow in fruits seeds and roots.
These tissues move in a Unidirectional. (only in one direction – upward direction)	These tissues move in a Bidirectional. (both the ways – up and down)
They live with hollow dead cells.	They live with cytoplasm without the nucleus.
The total amount of xylem tissue is more.	The total amount of phloem tissue is less.
It consists of tracheids, vessel elements, xylem parenchyma, xylem sclerenchyma and xylem fibers.	It consists of four of elements: sieve tubes, companion cells, phloem fibers, bast fibers, intermediary cells and the phloem parenchyma.
Transports soluble mineral nutrients and water molecules from the roots to the aerial parts of the plant.	Transports food and other nutrients including sugar and amino acids from leaves to storage organs and growing parts of the plant.
Forms vascular bundles with phloem.	Forms vascular bundles with xylem.
Provides mechanical strength to plant and helps in strengthening of the stem.	Translocates the synthesized sugars by the photosynthetic areas of plants to storage organs like roots, bulbs, and tubers.
It is responsible for replacing the total amount of lost water molecules through transpiration and photosynthesis.	It is responsible for transporting proteins and mRNAs throughout the plant.

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