plant organs · plant organs snc2d—2016/10/25. leaves provide a large surface area for...
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PlantOrgansSNC2D—2016/10/25
Leaves
Providealargesurfaceareaforphotosynthesis;
Leavescanalsostoreexcesssugar;
Leaveshaveveinsandarecoveredwithawaxycuticle;
Theyalsoregulategasexchangethroughthestomata.
Source:https://qph.ec.quoracdn.net
StemProvidesmainstructuralsupport;
Also,movesnutrientthroughvascularbundles:◦ Phloem:◦ Carriesfoodandnutrients;◦ Isalive.
◦ Xylem:◦ Allowpassageofwater;◦ Isdead.
Vascularbundlesarealsofoundinleavesandroots.
Source:http://www.karensgardentips.com
RootsProvidesstructuralstability;
Canactasstoragearea;
Roothairsusedformineralandwaterabsorption;
Twokindsofroots:
◦ Taproots—Veryfirm,vertical;
◦ Fibrousroots—Horizontal,nearsurface.
Source:https://s-media-cache-ak0.pinimg.com
FlowerReproductiveorgan;
Notallplantsflower;◦ Manytypesofreproduction.
Floweringplantshavedifferentmodesofpollination:◦ Wind;◦ Insects◦ Animals.
Afterpollination,seedsareproducedandputinfruits;◦ Fruitshavedifferentmodesofdispersion.
Source:http://earthobservatory.nasa.gov
Whichoftheseisthemostimportant?
Leaves
Roots
Stem
Flower