To grow and to regenerate
they are... 1.Protoderm 2.Procambium 3.Ground meristem
Groups of cells that are the source of new cells form tissue called meristem. Meristem cells aren't specialized, but when they divide, some of the new cells specialize into tissues. Areas of growth that lengthen the tips of roots and stems are called apical meristems. Lateral meristems, found all along woody roots and stems, increase the thickness of these plant parts.
Meristematic. "A meristem is a tissue in all plants consisting of undifferentiated cells (meristematic cells) and found in zones of the plant where growth can take place." - Wiki entry on Meristem. The are not undifferentiated. This is what the question means by 'perpetually young'.
The main difference betweem root and shoot apical meristem is that in case of root apical meristem dermatogen and periblem fuses at apex and give rise to calyptrogen which is responsible for the formation of root cap
The purpose of epithelial tissue is to protect the surfaces of internal organs and the outer surfaces of the skin covering the body.
the apical meristem
The meristem tissue.
meristem
in the bottom of the nucleolus :-D
apical meristem
lateral meristem
It develops the vascular tissue, meristem tissues, and epidermis tissue. It is also known as the zone of differentiation. It basically develops the whole roots tissue.
they are... 1.Protoderm 2.Procambium 3.Ground meristem
meristem
Groups of cells that are the source of new cells form tissue called meristem. Meristem cells aren't specialized, but when they divide, some of the new cells specialize into tissues. Areas of growth that lengthen the tips of roots and stems are called apical meristems. Lateral meristems, found all along woody roots and stems, increase the thickness of these plant parts.
root cap: is a section of tissue at the tip of a plant root meristem: is a tissue in a most plant consisting undifferiantiated cells
The two kind of vascular tissue angiosperms have would be the Monocot vascular bundles distributed througout the stem and the Dicot vascular bundles arranged in circles!