Vascular Tissues

Biology

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The function of vascular tissue

To transport water, mineral salts and nutrients to all cells.

Two types of vascular tissue

Xylem & phloem

The function of the xylem

Transport water & mineral salts absorbed by the roots to the stems and leaves.

The function of phloem

Transports organic compounds which are synthesised by the leaves through photosynthesis to the stems and roots

Vascular plants

Plants that have a transport system

Non-vascular plants

Do not have any transport system, for example, moss & alga.

Xylem vessels consist of

Dead cells at maturity which do not have cytoplasm.

Phloem vessels consist of

Sieves tubes & companion cells.

Reason why tracheids have pits

To allow water movement to adjacent cells.

Reason why companion cells contain mitochondria

To provide energy in the form of ATP to transport sucrose.

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