Flower Wallpaper Tumblr Hd Black and White Widescreen Download for Mobile images designs: Mobile Flower Wallpaper

Monday, 16 September 2013

Mobile Flower Wallpaper

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Flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants. Flowers contain sporangia and are the site where gametophytes develop. Flowers give rise to fruit and seeds. Many flowers have evolved to be attractive to animals, so as to cause them to be vectors for the transfer of pollen.
different Parts of flower
sepal a modified leaf, part of the outermost of the four groups of flower parts. The sepals of a flower are collectively called the calyx and act as a protective covering of the inner flower parts in the bud. Sepals are usually green, but in some flowers (e.g., the lily and the orchid) they are the same color as the petals and may be confused with them. In some groups of plants (e.g., the marsh marigold and the anemone) they are absent. The small green leaf like structures at the base of the flower head in the aster family are not true sepals but bracts; the sepals are modified into a circle of tiny white hairs on the ovary (the pappus; see aster). The sepals are sometimes fused into a tube around the base of the petals, as in the mint family.
Petal , one of the four basic parts of a flower, next innermost organ from the sepal. The whorl of petals is known collectively as the corolla. The number of petals is usually constant within groups, as are the numbers of the other organs. Identification by number is, however, complicated by various factors; the petals may be fused, inconspicuous, or entirely absent, in which case their role as the showy part of the flower is sometimes supplanted by modified leaves, the bracts, as in the dogwood and poinsettia, or by modified stamens, as in the canna and the lady's-slipper. Selective breeding can produce petal like stamens and so-called double flowers, i.e., varieties with more than the normal number of petals. Petals are usually brightly colored and often secrete perfume and nectar.

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