sexual reproduction flowering plants. two types of seed producing plants 1. angiosperms 1....
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Sexual Sexual ReproductionReproduction
Flowering PlantsFlowering Plants
Two Types of Seed Two Types of Seed Producing PlantsProducing Plants
1. Angiosperms1. Angiosperms Flowering plantsFlowering plants
2. Gymnosperm2. Gymnosperm Cone producing Cone producing
plantsplants
Two Types of FlowersTwo Types of Flowers
1. Complete1. Complete Has Has bothboth male male
andand female female structuresstructures
Most flowers are Most flowers are this typethis type
2. Incomplete2. Incomplete Has Has eithereither male male oror
female structuresfemale structures Examples: Examples:
zucchini, zucchini, pumpkins, squashpumpkins, squash
Parts of a FlowerParts of a Flower
StamenStamen
Stamen (#1)Stamen (#1) Male portion of flowerMale portion of flower Anther (#2)Anther (#2)
Produces pollenProduces pollen Filament (#3)Filament (#3)
Holds the anther upHolds the anther up Pollen (#4)Pollen (#4)
Male sex cellMale sex cell
Flower DiagramFlower Diagram
PistilPistil
Pistil (#5)Pistil (#5) Female portionFemale portion Stigma (#6)Stigma (#6)
Top sticky portion where pollen attachesTop sticky portion where pollen attaches Style (#7)Style (#7)
Middle portion that gives heightMiddle portion that gives height Ovary (#8)Ovary (#8)
Produces ovules (#9)Produces ovules (#9) Ovules (#9)Ovules (#9)
Female sex cellFemale sex cell
Flower DiagramFlower Diagram
Other structuresOther structures
Petals (#10)Petals (#10) Colored portionColored portion Attracts pollinatorsAttracts pollinators Protects inner partsProtects inner parts
Sepals (#11)Sepals (#11) Usually greenUsually green Protects flower in bud stageProtects flower in bud stage
Flower DiagramFlower Diagram
Flower Part VideoFlower Part Video
Two Types of PollinationTwo Types of Pollination
1. Self Pollination1. Self Pollination Pollen from the Pollen from the
same flower same flower fertilizes ovulesfertilizes ovules
Stamen is taller Stamen is taller than pistilthan pistil
2. Cross 2. Cross pollinationpollination Pollen from Pollen from
another flower another flower fertilizes ovulefertilizes ovule
Stamen is lower Stamen is lower than pistilthan pistil
Process of PollinationProcess of Pollination
1. Pollen lands on sticky stigma (pistil)1. Pollen lands on sticky stigma (pistil) 2. A hollow tube (pollen tube) grows 2. A hollow tube (pollen tube) grows
down the pistil to the ovarydown the pistil to the ovary 3. The nucleus (which contains 3. The nucleus (which contains
chromosomes) moves down the pollen chromosomes) moves down the pollen tube and combines with the nucleus of tube and combines with the nucleus of the ovulethe ovule
4. Fertilization occurs creating a seed 4. Fertilization occurs creating a seed (baby plant(baby plant
Video of PollinationVideo of Pollination
Video : SeedsVideo : Seeds
Snapdragon FlowerSnapdragon Flower
caliban.mpiz-koeln.mpg.de/.../ flower.html
Blow up of an antherBlow up of an anther
caliban.mpiz-koeln.mpg.de/.../ flower.htm
Cut away of an ovaryCut away of an ovary
caliban.mpiz-koeln.mpg.de/.../ flower.html
Review of Flower PartsReview of Flower Parts
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