Post on 29-Dec-2015
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Angiosperms
AngiospermsAngiospermsAlso called flowering plantsProduce flowersProduce fruit
Where Can You Find ThemAlmost everywhereArticTropical junglesDessertsOceans edge
The FlowerAll flowers have the same functionReproductive structure of angiosperms
PartsSepals and PetalsStamensPistilsOvary
Some flowers do not have all the partsSepalsProtect the developing flowerEnclosed in Sepals when flower is a budOften green in color
PetalsColorful leaf-like structuresShape, size, and number can vary from flower to flower
StamensMost flowers have male and female reproductive partsStamens are the male reproductive structureStalk = filamentTop = antherPollen is produced in the anther
PistillsFemale reproductive structureFound in center of the flowerCan have more than oneTip = stigmaTube = style
OvaryFound at the bottom of the pistalProtects seeds as they developCan have more then one ovule
PollinatorsColor, shape, and sent attract animalsInsects, birds, bats etc.
Reproduction StepsPollinationFertilizationFruit DevelopmentSeed DispersalPollinationGrain of pollen falls on the stigmaNectar (sugar) located deep inside the flowerAnimals want nectarBrush against the anthersSome pollen can drop on stigma as animal leavesFertilizationPollen falls into stigma and meets the ovuleCan fall into same flower or another similar oneSperm meets egg to become a zygoteThen develops into the seed embryoFruit DevelopmentAs seed develops, ovary changes into a fruitCan incase one or more seedsExamples: apples, peas, peppers, tomatoes
Seed DispersalFruit is meant to be eatenAnimals that eat the fruit will help disperse the seeds
Types of Angiosperms2 typesMonocotsDicots
Monocots3 or multiple of 3 petals on flowersLong slender leaves, veins run parallel to each otherRandom bundles of vascular tissue scatter through the stems
Dicots4 or 5 petals, or multiples of those, in the flowerWide leaves with branching veinsBundles of vascular tissue arranged in rings
In everyday LifeFoodClothingRubber, kind ofMedicinesfurniture