What are the components of the transport

Question.
What are the components of the transport system in highly organised plants ?

solution:
Transport system of highly organised plants consists of xylem and phloem.

(i) Xylem. It is used in transport of water and minerals. Xylem is made of tracheids, vessels, xylem fibers and xylem parenchyma. Tracheids and vessels constitute the tracheary elements or channels for transport of water and minerals.

(ii) Phloem. It is used for transport or translocation of organic solutes or food. Phloem consists of sieve tubes, companion cells, phloem fibers and phloem parenchyma. Sieve tubes constitute the channels for the transport of food materials.

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