Vascular tissue
Complex tissue system transporting fluids and nutrients in vascular plants.
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Vascular tissue is a complex transporting tissue, formed of more than one cell type, found in vascular plants. Its primary components are the xylem and phloem, which transport fluid and nutrients internally, and it is associated with two meristems: the vascular cambium and the cork cambium. All vascular tissues within a plant constitute its vascular tissue system.
Quick Facts
- Type
- Plant tissue system
- Components
- Xylem
- phloem
- vascular cambium
- cork cambium
- Function
- Transport of water
- minerals
- and nutrients
- Arrangement
- Vascular bundles in stems, roots, and leaves
- Secondary growth
- Produces wood and cork
Facts from the source article.
Lore & Background
Vascular tissue is composed of long, slender cells that function like pipes, with phloem cells connected end-to-end. In stems and roots, xylem typically lies closer to the interior and phloem toward the exterior, though in some Asterales dicots, phloem may also be located inwardly from the xylem. In leaves, vascular bundles are located among the spongy mesophyll, with xylem oriented toward the adaxial (upper) surface and phloem toward the abaxial (lower) surface, explaining why aphids are often found on leaf undersides.
Reader's Guide
Vascular tissue is fundamental to the structure and function of vascular plants, enabling the internal transport of water, minerals, and nutrients. Its arrangement in discrete vascular bundles, which include both xylem and phloem along with supporting cells, allows for efficient distribution throughout the plant. The vascular cambium, a meristem between xylem and phloem, produces new cells that increase plant girth, leading to woody growth in trees.
The cork cambium, developing among the phloem, produces cork cells that protect the surface and reduce water loss. Both wood and cork production are forms of secondary growth. Understanding vascular tissue is essential for comprehending plant physiology, growth patterns, and adaptations, as it directly influences how plants sustain themselves and respond to their environment.
Frequently Asked Questions
What is Vascular tissue?
Vascular tissue is a multi-cell type tissue system exclusive to vascular plants. It is built primarily from xylem and phloem, and it works alongside two meristems—the vascular cambium and the cork cambium—to keep the whole plant supplied.
What are Vascular tissue's main components?
The core parts are xylem, phloem, the vascular cambium, and the cork cambium. Together these four elements make up the full vascular tissue system of a plant.
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Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: Vascular tissue (CC BY-SA 4.0).
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