PARTS OF PLANTS-STEM

THE STEM IS THE MAIN SUPPORTIVE PART OF A PLANT. that grow above the ground .Stem bear leaves (organs of photosynthesis ), which grow at nodes,buds (shots covered by protective scales), which grow at the stem tip.9apical or terminal buds) and in the angle between a leaf and a stem (axillary and lateral buds);and flowers (reproductive structures).The stem forms part of plant's transport system :xylem tissue in the stem transports water and minerals from the roots to the aerial part of the plant , and phloem tissue transport nutrients manufactured in the leaves to other part of the plant . Stem tissues are also used to store water and food . Herbaceous (non woody ) stems have an outer protective epidermis covering a cortex that consist mainly of parenchyma (packing tissue) but also has some collenchyma (strengthening tissue).Woody stems have an outer protective layer of tough bark , which is perforated with lenticels (pores) to allow gas exchange .Inside the bark is a ring of secondary phloem , which surrounds an inner core of secondary xylem.

Comments

KEY BOARD SHORT CUTS

While surfing the Web, these commands could help you and are absolutely worth learning. By making repetitive motions faster, web surfing becomes so easy and pleasant! The following shortcuts can be work with desktop versions of Chrome, Firefox, and IE. CTRL-T to launch a new browser tab page. Tabbed pages are very useful: they let you open multiple web pages simultaneously without the same memory load as a full browser window. Simply press CTRL-T to launch a new tab. Related: use CTRL-Page Up and CTRL-Page Down to navigate between the tabs. CTRL-Enter to type 'www.' and '.com' Once you ...

THE BEATLES -ENGLISH ROCK BAND

The Beatles were an English rock band formed in Liverpool in 1960. The group, whose best-known lineup comprised John Lennon, Paul McCartney, George Harrison and Ringo Starr, are regarded as the most influential band of all time. The Beatles were from Liverpool, United Kingdom. In September of 1962 The Beatles recorded their first hit Love Me Do, which charted in UK, and reached the top of the US singles chart. London became their new home since 1963. ... Their October 1963 performance at the London Palladium made them famous in Great Britain and initiated the Beatlemania in the UK. The most popular Beatle. Paul McCartney ranked highest, at 35 percent; following by John Lennon (29%), Ringo Starr (11%), and George Harrison (8%). However, there is a gender gap: men favored John, while women preferred Paul. The Beatles' first record "Love Me Do" was released on October 5, 1962. It was a moderat...

REMOVE COOKIES FROM YOUR BROWSER

Internet cookies (the non-edible type) are tiny files stored on your hard drive by your browser that contain information about your visit to a particular website, like login status, personalization, and advertising preferences, etc. Most of the time, cookies make browsing much more enjoyable by keeping you logged in to a site you visit frequently or remembering the several questions you've already answered at your favorite polling site. Sometimes, however, a cookie may remember something you'd rather it didn't, or even become corrupted, resulting in a browsing experience that's less than enjoyable. This is when deleting cookies may be a good idea. You might also want to delete cookies if you're experiencing issues like 500 Internal Server or 502 Bad Gateway errors (among others), which are sometimes indications that the one or more cookies for a particular site are corrupted and should be removed. How Do I Delete Cook...

knowledge want

Search This Blog