The earliest form of this tissue is believed to have been found in the genus Cooksonia during the Silurian period, and its pattern of development can be characterized as centrarch, exarch, endarch, or mesarch.
The earliest form of this tissue is believed to have been found in the genus Cooksonia during the Silurian period, and its pattern of development can be characterized as centrarch, exarch, endarch, or mesarch. Minor structures in this tissue include the scaliform perforations and the fusiform initial. This tissue is composed of vessel elements and tracheids. Root pressure and transpiration allow water to pass through this tissue. For 10 points, name this plant tissue, which has a name meaning "wood," and is often contrasted with phloem.
The earliest form of this tissue is believed to have been found in the genus Cooksonia during the Silurian period, and its pattern of development can be characterized as centrarch, exarch, endarch, or mesarch.
Xylem