bloom are intimate pipe organ that exist so that a plant can grow seeds and reproduce itself . Bright colors and fragrance of flowers attract birds and insects necessary to comport pollen from one bloom to another . A complete flower has four homocentric whorl or ring of organ that are modify leaves . From the mall to the exterior of the flower , these parts are the shooting iron , stamen , petal and septate . If a flower lacks one of these role it is incomplete . Since complete bloom have all four whorls , they are epicene .
Pistil
The pistil is the long stalk arising from the center of a blossom and is sometimes work like a bowling peg . The pistil is the female procreative organ ; it has three parts , an ovary , the style and the stigma . The round base of the pistol is the ovary ; it contains one or more ovule . When they ’re fertilized , eggs inside the ovule develop into seeds . The style is that part of the stalk that get in touch the ovary to the stigma . The pasty boss at the final stage of the stalk is the stigma .
Stamen
The virile reproductive organ , the stamen , circle the pistil from the center of the flush . The stamen have a stalk called the filum . The anther atop the stalk grow microscopic grains of pollen . Each metric grain of pollen produces the sperm , the manful sex cubicle . The filament holds the anther into position so that the current of air , worm , bats or bird can disperse the pollen .
Petals
The flower petal are the brightly - colorize portion surround the pistol and stamen . The petals attract the care of birds and insects necessary for pollenation . They sometimes contain perfume as well as produce ambrosia . The layer of flower petals are jointly call the corolla . plant are often identified by their number of petal .
The embryo of a monocot produces one seed leaf or " seed leafage " and has petals in multiples of four or five . The seed leaf receives nutrients until the seed is ready to develop dead on target leave of absence .
The embryo of a dicotyledon produces two seed leaf and has petals in multiples of three .
Sepals
Beneath the petals , the sepals , commonly green and leaf - similar , work a temporary protective cover over an unopened flower . The sepals fold up back to allow the petal of a flower to unfurl . The sepals are collectively called the calyx . Monocots have sepals in multiples of four or five ; exogen have sepals in multiples of three .
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