1. Vascular Cells:
* Xylem: These cells are dead at maturity and form long, hollow tubes that transport water and dissolved minerals from the roots to the rest of the plant.
* Phloem: These cells are living at maturity and transport sugars produced in leaves to other parts of the plant.
2. Ground Tissue Cells:
* Parenchyma: These are the most abundant type of cells in a plant. They perform various functions including storage, photosynthesis, and support.
* Collenchyma: These cells provide structural support and are found in the cortex of stems.
* Sclerenchyma: These cells provide strength and rigidity to the stem. They are often found in the vascular bundles and can be either fibers or sclereids.
3. Dermal Tissue Cells:
* Epidermis: This outermost layer of cells protects the stem from damage and water loss. It can also have specialized cells like guard cells for gas exchange.
4. Meristematic Cells:
* Apical meristem: Found at the tip of the stem, these cells are responsible for increasing the length of the stem.
* Lateral meristem: These cells are found in the vascular cambium (responsible for secondary growth, producing more xylem and phloem) and cork cambium (responsible for producing cork cells for protection).
It's important to note that stem cells are not the same as the cells found in a plant stem. Stem cells are undifferentiated cells that have the potential to develop into different types of cells. While plant stems do contain meristematic cells, these are not considered true stem cells in the same way as those found in animals.
