ROOTS ARE THE UNDERGROUND PART OF PLANTS.They have three main functions .First,they anchor the plant in the soil.Second , they absorb water and minerals from the space between soil particles ;the roots' absorptive properties are increased by root hair ,which grows behind the root tips , allowing maximum uptake of vital substances .Third , the root is the part of the plant's transport system :xylem carries water and minerals from the root to the stem and leaves,and phloem carries nutrients from the leaves to all parts of the root system.In addition , some roots (e.g carrots)are food stores.Roots have an outer epidermis covering a cortex of parenchyma(packing tissue ) and a central cylinder of vascular tissue .This arrangement helps the roots resist the force of compression as they grow through the soil.
When you decide to keep a Web page to look at later, you're doing something called "bookmarking". Bookmarks are simply links to sites that you visit frequently or want to keep handy for reference. There are a couple ways you can save Web pages for later: In your browser. All major Web browsers provide you with the ability to make and store your favorite links within the browser. These links are accessible several different ways, depending on what browser you might be using: a sidebar, a toolbar, or a drop-down menu. In a social bookmarking site. If you want to access your collection from anywhere and share them with others, then a social marking site - a site that lets you store your favourites links - might be for you. launch I n the context of the Web, the term launch usually means two different things. Permission to Launch - Website First, some Web sites use the word "launch" as a substitute for the more commonly known "enter" command. For ...
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