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The epidermis is the main component of the dermal tissue system of leaves (diagrammed below), and also stems, roots, flowers, fruits, and seeds; it is usually transparent (epidermal cells have fewer chloroplasts or lack them completely, except for the guard cells.) The cells of the epidermis are structurally and functionally variable.
Roots of trees. Early root growth is one of the functions of the apical meristem located near the tip of the root. The meristem cells more or less continuously divide, producing more meristem, root cap cells (these are sacrificed to protect the meristem), and undifferentiated root cells. The latter become the primary tissues of the root, first ...
The tree is a cultural symbol of the Southern United States, being the official state tree of Alabama. [4] This particular species is one of the eight pine tree species that falls under the "Pine" designation as the state tree of North Carolina. [5]
Date: 22 March 2005 (original version); 7 January 2007 (SVG version).: Source: Root Canal Illustration with Molars by Jeremy Kemp (2005-03-22) using Adobe Illustrator; converted to SVG by Jellocube27 (2007-01-07); based on information from illustrations at www.animated-teeth.com.
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A typical mature tree 30–50 m tall has a root system that extends horizontally in all directions as far as the tree is tall or more, but well over 95% of the roots are in the top 50 cm depth of soil. A few plants with fibrous root systems: Coconut palm [1] Grass; Rosemary; Fibrous roots grow fairly close to the surface of the ground.
Banyan trees are an example of a strangler fig that begins life as an epiphyte in the crown of another tree. Their roots grow down and around the stem of the host, their growth accelerating once the ground has been reached. Over time, the roots coalesce to form a pseudotrunk, which may give the appearance that it is strangling the host.