Alot of grass are actually weeds. In Texas, a very common turfgrass is Bermuda. It comes in many varieties like Tifway or 419. But all being equal, Bermuda is a weed.
Its contents are the same as plant or a tree. Cells, made mostly of water, and Chlorophyl.
Specifically, grass stems are generally smooth and cylindrical. They are made of elongated, hollow, solid, or semisolid sections called internodes that are connected by a solid, often swollen nodes. Leaves, branches, and adventitious roots are produced at the nodes.
As a young grass embryo develops, it soon forms a leafy shoot with growing areas at the tip (the apical meristem or growing point) and just above each stem node (the intercalary meristems). The intercalary meristems make it possible for the stem to continue to grow below the growing point at the tip of the shhot. As the stem tissue matures, the tender growing areas both at the nodes and at the shoot tip are protected by the sheathing leaf bases. Only after the lower part of the shoot is well established does the flowering shoot tip emerge from its protective cloak of leaves.
Grass generally are sod forming or tufted in growth habit. Bermuda would be the sod type. All grass at almost any home would be sod forming type. The tufted type you would find in prairies, deserts, savannahs, etc., or in the landscape as an ornamental grass.
The blades of most grasses are flat and linear (with parallel sides) or lanceolate (tapering to a point from or immediately above the base). In a few species, especially those of dry regions, the blades become enrolled (involate). Most grass blades have a predominant slender vein or rib, called the midnerve, and a few or several lateral ribs (nerves). The leaf margin is commonly smooth, roughened with short, stiff spicules, or bordered with a row of hairs (ciliate).
2006-08-10 04:36:56
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answer #1
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answered by Ron B. 7
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