Vascular Bundle
Consist of xylem and phloem
A vascular bundle is a tubular structure that contains xylem and phloem tissues in plants. Xylem is responsible for transporting water and minerals from the roots to different parts of the plant, whereas phloem transports organic compounds, such as sugars and amino acids, from the leaves to other parts of the plant.
The arrangement of xylem and phloem tissues in a vascular bundle varies depending on the type of plant. In monocotyledons, vascular bundles are scattered throughout the stem, whereas in dicotyledons, they are arranged in a ring around the stem.
Vascular bundles also provide mechanical support to the plant, as they are surrounded by sclerenchyma cells and collenchyma cells that help maintain the structural integrity of the stem. Some plants also have special types of vascular bundles, such as leaf trace bundles, which transport nutrients from the stem to the leaves, and root stele bundles, which transport nutrients from the root to the stem.
Overall, vascular bundles play a crucial role in plant growth and development by enabling the movement of essential nutrients and providing structural support.
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