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Question Video: Describing the Composition of the Vascular System Biology

Plant tissues can be organized into systems. What two structures is the vascular system comprised of?

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Video Transcript

Plant tissues can be organized into systems. What two structures is the vascular system comprised of?

Vascular plants have a vascular system that is composed of specialized vascular tissues that are used for transporting substances. The two main vascular tissues in plants are called the xylem and the phloem. The phloem transports substances like sugars and amino acids either up or down the plant stem. While these sugars and amino acids are technically dissolved in water so there will be some water involved in phloem transport, it is not its main function to transport water. That’s the function of the xylem.

The xylem transports water and minerals from the soil in a one-way flow from the roots through the stem to the upper parts of the plant like the leaves, where it is required for photosynthesis. So the two structures the vascular system in plants is composed of are the xylem and phloem.

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