How do flowers differ from each other?
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Color, type, form, and so on...
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Different flowers ahve diffent scent genes.In order to attract insect for entomophily(Insect assisted pollination), a flower needs specific kind of insect whose mouth parts are well suited for pollen grains to fall on stigma.
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In angiosperms there is fruit as well as seed formation. \nIn gymnosperm ther is only seed formation but no fruit formation, this is the most important and major difference between them.\nEdit-: The difference I quoted   above   is the major and the fundamental one. The other differences are as follows:- Gymnosperms are all trees, some of them are very tall and massive. The Angiosperms,\n on the other hand, can be trees, herbs as well as shrubs.\n Internally (Anatomically speaking) Gymnosperms  have; Tracheids in xylem and sieve cells in phloem , companion cells are absent. Their xylem walls have bordered pits.\nIn Angiosperms, true vessels i.e. tracheae are present in xylem. Sieve tubes and companion cells are present in phloem. Their xylem walls show simple pits.\nGymnosperms are more ancient than the Angiosperms.\n I only hope that you understand the botanical terminology in the above text.
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FLowers are the sex organs of the plant.  They are pollinated and make seeds.
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Not only the colors and scents, but some flowers emmit "smell alike" pheramones to attract certain sex of insects.\nIn addition, its also been found that not only the color of the flower attracts the insects, but also the ultraviolet radiation that certain flowers colors give off. Certain flowers colors give off colors that only the insect can see, almost like looking at a 1960's poster under a black light. They see certain colors or patterns and go for the flower.
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Due to differences in chemical structures
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Plants are classified in several different ways, and the further away from the garden we get, the more the name indicates a plant's relationship to other plants, and tells us about its place in the plant world rather than in the garden. Usually, only the Family, Genus and species are of concern to the gardener, but we sometimes include subspecies, variety or cultivar to identify a particular plant. \n\nStarting from the top, the highest category, plants are classified as follows. Each group has the characteristics of the level above it, but has some distinguishing features. The further down the scale you go, the more minor the differences become, until you end up with a classification which applies to only one plant\n\n\n\nThe Site below should help you understand plant classification better
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the shape of animal cell can be altered while plant cell have a fixed shape. \nplant cell have cell wall but animal cell have none. \nplant cell have ssap vacoule but animal cell have none  ( if there was one it is really small).\n\nother differences if you would like to know\nthe plant cell nucleus is at one side while the animal cell nuclues is centrally located.\nthe presence of chloroplast in plant cell while animal cell have none.
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I believe a number of roses come in a red coloration.  Here's what wikipedia.org says.\n\n"There is no single system of classification for garden roses. In general, however, roses are placed in one of three main groups:\n\n    * Wild Roses - The wild roses includes the species listed above and some of their hybrids.\n    * Old Garden Roses - Most old garden roses are classified into one of the following (ordered by approximate age - oldest first):\n          o Alba - Literally "white roses", derived from R. arvensis and the closely allied R. alba. These are some of the oldest garden roses, probably brought to Britain by the Romans. Once-flowering. Examples: 'Semi-plena', 'White Rose of York'.\n          o Gallica - The Gallica roses have been developed from R. gallica which is a native of central and southern Europe. They flower once in the summer. Examples: 'Cardinal de Richelieu', 'Charles de Mills', 'Rosa Mundi' (R. gallica versicolor).\n          o Damask - Robert de Brie is given credit for bringing them from Persia to Europe sometime between 1254 and 1276. Summer Damasks (crosses between Gallica roses and R. phoenicea) bloom once in summer. Autumn Damasks (Gallicas crossed with R. moschata) bloom later, in the autumn. Examples: 'Ispahan', 'Madame Hardy'.\n          o Centifolia (or Provence) - These roses, raised in the seventeenth century in the Netherlands, are named for their "one hundred" petals. Once-flowering. Examples: 'Centifolia', 'Paul Ricault'.\n          o Moss - Closely related to the centifolias, these have a mossy excrescence on the stems and sepals. Once-flowering. Example: 'Comtesse de Murinais', 'Old Pink Moss'.\n          o China - The China roses brought with them an amazing ability to bloom repeatedly throughout the summer and into late autumn. Four china roses ('Slater's Crimson China', 1792; 'Parsons' Pink China', 1793; 'Hume's Blush China', 1809; and 'Parks' Yellow Tea Scented China', 1824) were brought to Europe in the late eighteenth and nineteenth centuries which brought about the creation of the repeat flowering old garden roses and later the modern garden roses. Examples: 'Old Blush China', 'Mutabilis'.\n          o Portland - These are named after the Duchess of Portland who received (from Italy in 1800) a rose then known as R. paestana or 'Scarlet Four Seasons' Rose' (now known simply as 'The Portland Rose'). This group was developed from that rose. Repeat-flowering. Example: 'James Veitch', 'Rose de Rescht', 'The Portland Rose'.\n          o Bourbon - They originated on l'Île de Bourbon (now called Réunion). Probably the result of a cross between the Autumn Damask and the 'Old Blush China'. Introduced in France in 1823. Repeat-flowering. Examples: 'Louise Odier', 'Mme. Pierre Oger', 'Zéphirine Drouhin'.\n          o Hybrid Perpetual - The dominant class of roses in Victorian England, they were derived to a great extent from the Bourbons. Repeat-flowering. Examples: 'Ferdinand Pichard', 'Reine Des Violettes'.\n          o Tea - The result of crossing two of the original China Roses ('Hume's Blush China' and 'Parks' Yellow Tea Scented China') with various Bourbons and Noisette roses. Somewhat more tender than other old garden roses (most likely because of R. gigantea in the ancestry of the Parks rose), teas are repeat-flowering roses although their fragrance is not always a tea scent. Example: 'Lady Hillingdon'.\n          o Bermuda "Mystery" Roses - A group of several dozen "found" roses that have been grown in Bermuda for at least a century. The roses have significant value and interest for those growing roses in tropical and semi-tropical regions, since they are
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Common Burdock: Burs are much smaller and stalks are shorter (burs are closer to the stem); the stalks of the lower leaves are hollow, not grooved and the plants themselves do not grow as tall\n\nGreat: The burs are large - up to almost 4cm and the stalks are long; stalks of lower leaves are solid and grooved on the upper surface; grows taller in general
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roses are in a genus with a lot us species\nhttp://en.wikipedia.org/wiki/List_of_Rosa_species
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If you mean "what structures are inside a rose?" then here is the answer: The general structure of a flower consists of sepals, petals, pistil, and stamen.  Sepals are the green leaves that cover the flower before it blooms.  The petals are the pretty and fragrant part.  The pistil is the female reproductive structure which receives pollen and forms seeds.  The stamen is the male reproductive structure and makes pollen.  The pistil and stamen are housed in the center of the rose.  \n\nIf you are asking "what is inside rose petals that make them smell?" That is caused by oils that are formed in petals.
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A flower is the reproductive structure found in flowering plants (plants of the division Magnoliophyta, also called sperms). The flower structure contains the plant's organs, and its function is to produce seeds through reproduction. For the higher plants, seeds are the next generation, and serve as the primary means by which individuals of a species are dispersed across the landscape. After fertilization, portions of the flower develop into a fruit containing the seeds.\nThe function of a flower is to mediate the union of male and female gametes. The process is termed pollination. Many flowers are dependent upon the wind to move pollen between flowers of the same species. Others rely on animals (especially insects) to accomplish this feat. The period of time during which this process can take place (the flower is fully expanded and functional) is called anthesis.
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THE HOW AND WHY OF FLOWER COLOR \nBy Dr. Leonard Perry, Extension Professor \nUniversity of Vermont \n  \n\nThe main reason most of us grow flowers is for their colors. The color provided by flowers and the combinations of colors, and the feelings these evoke, is the main reason I and others I know garden. Yet have you ever thought about what makes flowers the colors that they are or how you can describe these colors to others? \n\nWhat may seem simple on the surface is really a lot more complicated than you might think. The color that you see in flowers is actually the result of reflected light from various plant pigments. \n\nA group of compounds called "anthocyanidins" are the basic ingredients. They are named for the flowers in which they were first found, such as the scarlet "pelargonidin" from the geranium or Pelargonium, the purple "petunidin" from the Petunia, or the blue-violet "delphinidin" from the Delphinium. \n\nIt is these anthocyanidin pigments that biotechnologists are studying to change flower colors. For instance, they've taken the scarlet pelargonidin-producing gene from corn and placed it into petunias to give this flower a novel orange color. \n\nThe gene for delphinidin (blue-violet) has been placed into carnations to make some blue. Other factors within the cell, such as the acidity (pH) and even cell shape, are making the genetic production of blue mums and roses a bit more challenging. \n\nCombine the anthocyanidin compounds with sugar in plants to produce the more common "anthocyanin" pigments responsible for our fall leaf colors, among other colors. There are other pigments in leaves as well, such as the flavonols (yellow) and, of course, chlorophyll (green). Flavonols, and the colorless (to us) flavonoid pigments, not only affect the color caused by primary pigments (co-pigmentation), but by absorbing ultraviolet light they also are readily seen by insects. \n\nIt is the insects and other pollinators, such as moths, for whom flower colors really exist, not for our pleasure. Pollination, and subsequent fruit production, is the main purpose of most flowers. A bee balm (Monarda) that appears red to us, may appear white to an insect. Or what are white and yellow flowers to us may appear light blue to insects. \n\nEver wonder why some flowers such as lungworts (Pulmonaria), forget-me-nots (Myosotis), or other members of the Borage family seem to change color from pink to blue? Other flowers such as larkspur (Delphinium) also may exhibit these changes. This usually indicates to insects that a flower has aged and is past pollination, so move on! \n\nMany flowers may not change color on an individual plant, but may change color, even if slightly, among locations or various conditions. Temperature affects color, hence, there are often more vivid colors in cool northern gardens than hot summer ones. Plant stress, such as from drought, insect attack, or plant nutrition (too much or little) also can cause different levels of pigments in flowers, and. as a result, different colors. \n\nSo the next time you look at flowers in your garden, a catalog, or in a book, think about all those unseen chemicals that cause the color. Think, too, about who in the insect world these flower colors are designed to attract, and what colors they may be seeing!
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Depends on what the person might like....or the occassion. \nColors & flowers portray different emotions....like red for passion or love and white for...truth or peace. You could give mono color flowers, or make a colorful bouquet. It will depend...just make a choice, and hopefully the person will like it! If the person is a girl..well girls love flowers in general, so I don't think you could go wrong.\n\nHere's a link to "flowers and their meaning". There are other useful websites on the net too. U can research..\n\nDifferent colors also portray different emotions and meanings. There's tonz of websites that you can read and get information on too. Just type the keywords and you will come across lots of resources.\n\nhttp://www.getromantic.com/romance/content.shtml?resources/meaningofflowers.shtml\n\nOk....goodluck! :)
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If you restrict this to botany, many people would say "orchids!!" This is because they are beautiful and have very intricate reproductive processes (often involving mimicry of female wasps or bees to induce males to try to mate with them, thus transfering pollen from flower to flower).\nSome others might nominate the sunflower or daisy family as the most highly evolved. The daisy-type flower itself is a very complex structure and takes a multitude of forms.
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Floral and geometric design