plant structure and function. is it a stem, leaf, root, flower, fruit or seed? food part of plant...
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PLANT STRUCTURE AND FUNCTION
IS IT A STEM, LEAF, ROOT, FLOWER, FRUIT OR SEED?
FoodFood Part of PlantPart of Plant
BroccoliBroccoli
CabbageCabbage
Carrot Carrot
Celery StalkCelery Stalk
Corn KernelCorn Kernel
GarlicGarlic
OnionOnion
PotatoPotato
TomatoTomato
ZucchiniZucchini
IS IT A STEM, LEAF, ROOT, FLOWER, FRUIT OR SEED?
FoodFood Part of PlantPart of Plant
BroccoliBroccoli FlowerFlower
CabbageCabbage FlowerFlower
Carrot Carrot RootRoot
Celery StalkCelery Stalk StemStem
Corn KernelCorn Kernel SeedSeed
GarlicGarlic RootRoot
OnionOnion RootRoot
PotatoPotato RootRoot
TomatoTomato FruitFruit
ZucchiniZucchini FruitFruit
PLANT BODY
Shoot system = leaves + stem
Root system
THREE TYPES OF PLANT TISSUES
Vascular TissueTransportSupport
Ground TissueSynthesis of SugarsStorageSupport
Dermal TissueProtection
PLANT BODY
Functions
Exposes surface to sunlightMajor site of photosynthesisConserves waterProvides for gas exchange
BladeBlade
PetiolePetiole
Leaf = blade + petioleLeaf = blade + petiole
Stoma = opening in the leaf for gas exchange, water evaporation
STRUCTURES OF THE LEAF
Photosynthesis
Conserves water
Transports water and sugar to stem
and roots
PLANT BODYStem: series of nodes and
internodesFunctions
Holds leaves up to light
Transports substances through vascular tissue
Xylem conducts waterXylem conducts waterand minerals and minerals
Phloem transportsPhloem transports sugar sugar
PLANT BODYRoot
Functions Anchors plant
in soil Takes up water and minerals from soil
FLOWERING PLANT REPRODUCTIONFlowers are modified leaves, specialized for reproduction. Pollen
grains
Ovule
Flower
Meiosis
Mitosis
Mitosis
Angiosperms are seed bearing & fruit producing or flowering plants.
FlowersCome in many different shapes, sizes and colors, but they all have the same functions:
help plants reproduce.
where seeds are made.
Flowers are the sexual reproductive organs of plants.
All flowers, regardless of variety, have the function of seed formation and the production of more plants.
Flowers contain both non-reproductive and reproductive structures.
THE PARTS OF A FLOWER
Most flowers have four parts:
sepals,
petals,
stamens,
carpels.
THE PARTS OF A FLOWER
Sepals protect the bud until it opens.Petals attract insects.Stamens make pollen.Carpels grow into fruits which contain the seeds.
AntherThis is the part of the stamen that produces and contains pollen. It is usually on top of a long stalk that looks like a fine hair. When the grains are fully grown, the anther splits open.
Male Parts
Draw and label this sketch in your notes.
FilamentThis is the fine hair-like stalk that the anther sits on top of. The part of a stamen that supports the anther of a flower (the stalk of the stamen).
Male Parts
Draw and label this sketch in your notes.
StamenThis is the male part of the flower. It is made up of the filament and anther, it is the pollen producing part of the plant. The number of stamen is usually the same as the number of petals.
Male Parts
Draw and label this sketch in your notes.
Female Parts
StigmaThe sticky surface at the top of the pistil. It traps and holds the pollen and starts the fertilization process.
Female Parts
StyleThe tube-like structure that holds up the stigma.
Female PartsOvaryThe part of a plant, usually at the base of the flower, that has the seeds inside and turns into the fruit that we eat.
Ovule The
structure in a flower that develops into a seed when fertilized.(eggs)
Female Parts
Carpel/PistilThe carpel is the female reproductive organ of a flower. It makes the seeds. It is made up of the stigma, style, and ovary. There may be more than one carpel in a flower.
Female Parts
Pollen - powdery grains that contain the male reproductive cells of most plants. Pollen is produced by the anthers.
POLLINATION
Flowering plants use the wind, insects, bats, birds and mammals to transfer pollen.
When pollination occurs, pollen moves from the male parts to the female parts. Pollen grains land on the stigma and a tiny tube grows from it and down the style into the ovary.
The fertilized ovule becomes the seed and the ovary becomes the fruit.
Pollen is the powdery grains that contain male reproductive cells of most plants produced by anther. Flowering plants use the wind , insects bats, birds and mammals to transfer pollen, When pollination occurs, pollen moves from the male parts to the female parts
. Pollen grains land on the stigma and a tiny tube grows from it and down the style into the ovary.
The fertilized ovule becomes the seed and the ovary become the fruit.
Pollen grains land on the stigma and a tiny tube grows from it and down the style into the ovary. The fertilized ovule becomes the seed and the ovary become the fruit.
A COMPLETE FLOWER HAS BOTH MALE AND FEMALE PARTS
SepalSepal
PetalPetal
OvaryOvary
StyleStyle
StigmaStigma
Pist
ilPi
stil
Pist
ilPi
stil
AntherAntherFilamentFilament
Stam
enSt
amen
Stam
enSt
amen
Encloses and Protects Bud
Attracts pollinator
Male part
Female part Produces egg
Produces pollen
Mature PollenMature PollenGrainGrain
POLLINATION ANDFERTILIZATION IN A FLOWER
Tube Cell NucleusTube Cell NucleusSperm CellsSperm Cells
1.1. pollen grainspollen grainsland on stigmaland on stigma
StigmaStigma
StyleStyle
OvaryOvary
2.2. pollen tubes growpollen tubes growdown stigma to ovarydown stigma to ovary
SpermSperm
EggEgg
3A: Fusion of3A: Fusion ofsperm + eggsperm + egg
3B: Fusion of 23B: Fusion of 2ndnd
sperm + twosperm + twopolar nucleipolar nuclei
3.3. doubledoublefertilizatiofertilizationn
Polar nucleiPolar nuclei
OvuleOvule
DEVELOPMENT OF FRUIT AND SEEDSFROM FLOWER PARTS
TriploidTriploidEndospermEndosperm
CellCell
TriploidTriploidEndospermEndosperm
CellCell
OvaryOvaryOvaryOvaryIntegumentIntegumentIntegumentIntegument
DiploidDiploidZygoteZygoteDiploidDiploidZygoteZygote
EndospermEndospermEndospermEndosperm
FreshFreshFruitFruitFreshFreshFruitFruit
SeedSeedCoatCoatSeedSeedCoatCoatEmbryoEmbryo
(new (new plant)plant)
EmbryoEmbryo(new (new plant)plant)
Seed = embryo + stored food + seed coatFruit = ovary wall, mechanism for seed dispersal
Provides nutrition