flowers n monocots. flowers n -veins in most are parallel
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FlowersFlowers
MonocotsMonocots
FlowersFlowers
MonocotsMonocots --veins in most are veins in most are
parallelparallel
FlowersFlowers
MonocotsMonocots --veins in most are veins in most are
parallelparallel -flower parts in 3’s or -flower parts in 3’s or
multiples of 3multiples of 3
FlowersFlowers
MonocotsMonocots --veins in most are veins in most are
parallelparallel -flower parts in 3’s or -flower parts in 3’s or
multiples of 3multiples of 3 -vascular bundles are -vascular bundles are
scattered in a cross scattered in a cross section of a stemsection of a stem
FlowersFlowers
MonocotsMonocots --veins in most are veins in most are
parallelparallel -flower parts in 3’s or -flower parts in 3’s or
multiples of 3multiples of 3 -vascular bundles are -vascular bundles are
scattered in a cross scattered in a cross section of a stemsection of a stem
-stems of most monocots -stems of most monocots do not grow thicker from do not grow thicker from year to yearyear to year
FlowersFlowers
MonocotsMonocots --veins in most are parallelveins in most are parallel -flower parts in 3’s or -flower parts in 3’s or
multiples of 3multiples of 3 -vascular bundles are -vascular bundles are
scattered in a cross scattered in a cross section of a stemsection of a stem
-stems of most monocots -stems of most monocots do not grow thicker from do not grow thicker from year to yearyear to year
-in roots bundles of xylem -in roots bundles of xylem & phloem alternate in a & phloem alternate in a circlecircle
FlowersFlowers
MonocotsMonocots --veins in most are parallelveins in most are parallel -flower parts in 3’s or -flower parts in 3’s or
multiples of 3multiples of 3 -vascular bundles are -vascular bundles are
scattered in a cross scattered in a cross section of a stemsection of a stem
-stems of most monocots -stems of most monocots do not grow thicker from do not grow thicker from year to yearyear to year
-in roots bundles of xylem -in roots bundles of xylem & phloem alternate in a & phloem alternate in a circlecircle
FlowersFlowers
DicotsDicots
FlowersFlowers
DicotsDicots -veins in leaves form -veins in leaves form
branching networkbranching network
FlowersFlowers
DicotsDicots -veins in leaves form -veins in leaves form
branching networkbranching network -flower parts in 4’s or 5’s or -flower parts in 4’s or 5’s or
multiples of 4 or 5multiples of 4 or 5
FlowersFlowers
DicotsDicots -veins in leaves form -veins in leaves form
branching networkbranching network -flower parts in 4’s or 5’s or -flower parts in 4’s or 5’s or
multiples of 4 or 5multiples of 4 or 5 -vascular bundles of stem -vascular bundles of stem
are arranged in a ringare arranged in a ring
FlowersFlowers
DicotsDicots -veins in leaves form -veins in leaves form
branching networkbranching network -flower parts in 4’s or 5’s or -flower parts in 4’s or 5’s or
multiples of 4 or 5multiples of 4 or 5 -vascular bundles of stem -vascular bundles of stem
are arranged in a ringare arranged in a ring -stems can grow thicker -stems can grow thicker
from year to yearfrom year to year
FlowersFlowers
DicotsDicots -veins in leaves form -veins in leaves form
branching networkbranching network -flower parts in 4’s or 5’s or -flower parts in 4’s or 5’s or
multiples of 4 or 5multiples of 4 or 5 -vascular bundles of stem -vascular bundles of stem
are arranged in a ringare arranged in a ring -stems can grow thicker -stems can grow thicker
from year to yearfrom year to year -single mass of xylem forms -single mass of xylem forms
an “X” in root, phloem is an “X” in root, phloem is located between arms of located between arms of “X”“X”
FlowersFlowers
DicotsDicots -veins in leaves form -veins in leaves form
branching networkbranching network -flower parts in 4’s or 5’s or -flower parts in 4’s or 5’s or
multiples of 4 or 5multiples of 4 or 5 -vascular bundles of stem -vascular bundles of stem
are arranged in a ringare arranged in a ring -stems can grow thicker -stems can grow thicker
from year to yearfrom year to year -single mass of xylem forms -single mass of xylem forms
an “X” in root, phloem is an “X” in root, phloem is located between arms of located between arms of “X”“X”
FlowersFlowers
Flower StructureFlower Structure
FlowersFlowers
Flower StructureFlower Structure -flowers are actually miniature -flowers are actually miniature
stems that produce four stems that produce four specialized leavesspecialized leaves
FlowersFlowers
Flower StructureFlower Structure -flowers are actually miniature -flowers are actually miniature
stems that produce four stems that produce four specialized leavesspecialized leaves
– SepalsSepals
FlowersFlowers
Flower StructureFlower Structure -flowers are actually miniature -flowers are actually miniature
stems that produce four stems that produce four specialized leavesspecialized leaves
– SepalsSepals– PetalsPetals
FlowersFlowers
Flower StructureFlower Structure -flowers are actually miniature -flowers are actually miniature
stems that produce four stems that produce four specialized leavesspecialized leaves
– SepalsSepals– PetalsPetals– StamensStamens
FlowersFlowers
Flower StructureFlower Structure -flowers are actually miniature -flowers are actually miniature
stems that produce four stems that produce four specialized leavesspecialized leaves
– SepalsSepals– PetalsPetals– StamensStamens– CarpelsCarpels
FlowersFlowers
SepalsSepals
FlowersFlowers
SepalsSepals -in many flowers are -in many flowers are
greengreen
FlowersFlowers
SepalsSepals -in many flowers are -in many flowers are
greengreen -enclose the flower -enclose the flower
bud before it opens bud before it opens protecting the flowerprotecting the flower
FlowersFlowers
SepalsSepals -in many flowers are -in many flowers are
greengreen -enclose the flower -enclose the flower
bud before it opens bud before it opens protecting the flowerprotecting the flower
-all sepals together -all sepals together form the calyxform the calyx
FlowersFlowers
PetalsPetals
FlowersFlowers
PetalPetal -second circle of flower -second circle of flower
partsparts
FlowersFlowers
PetalPetal -second circle of flower -second circle of flower
partsparts -often brightly colored-often brightly colored
FlowersFlowers
PetalPetal -second circle of flower -second circle of flower
partsparts -often brightly colored-often brightly colored -all the petals form the -all the petals form the
corollacorolla
FlowersFlowers
PetalPetal -second circle of flower -second circle of flower
partsparts -often brightly colored-often brightly colored -all the petals form the -all the petals form the
corollacorolla -often used to attract -often used to attract
insectsinsects
FlowersFlowers
PetalPetal -second circle of flower -second circle of flower
partsparts -often brightly colored-often brightly colored -all the petals form the -all the petals form the
corollacorolla -often used to attract -often used to attract
insectsinsects -because sepals and -because sepals and
petals do not form petals do not form gametophytes they are gametophytes they are called “sterile” leavescalled “sterile” leaves
FlowersFlowers
StamensStamens
FlowersFlowers
StamensStamens -next circle of leaves -next circle of leaves
inside the petalsinside the petals
FlowersFlowers
StamensStamens -next circle of leaves -next circle of leaves
inside the petalsinside the petals -has a long thin filament -has a long thin filament
that supports the antherthat supports the anther
FlowersFlowers
StamensStamens -next circle of leaves -next circle of leaves
inside the petalsinside the petals -has a long thin filament -has a long thin filament
that supports the antherthat supports the anther -male gametophytes are -male gametophytes are
formed inside the antherformed inside the anther
FlowersFlowers
StamensStamens -next circle of leaves -next circle of leaves
inside the petalsinside the petals -has a long thin filament -has a long thin filament
that supports the antherthat supports the anther -male gametophytes are -male gametophytes are
formed inside the antherformed inside the anther -grains of pollen are -grains of pollen are
formed on anthersformed on anthers
FlowersFlowers
StamensStamens -next circle of leaves -next circle of leaves
inside the petalsinside the petals -has a long thin filament -has a long thin filament
that supports the antherthat supports the anther -male gametophytes are -male gametophytes are
formed inside the antherformed inside the anther -grains of pollen are -grains of pollen are
formed on anthersformed on anthers -pollen divides to form 2 -pollen divides to form 2
sperm nucleisperm nuclei
FlowersFlowers
StamensStamens -next circle of leaves -next circle of leaves
inside the petalsinside the petals -has a long thin filament -has a long thin filament
that supports the antherthat supports the anther -male gametophytes are -male gametophytes are
formed inside the antherformed inside the anther -grains of pollen are -grains of pollen are
formed on anthersformed on anthers -pollen divides to form 2 -pollen divides to form 2
sperm nucleisperm nuclei
FlowersFlowers
CarpelsCarpels
FlowersFlowers
CarpelsCarpels -center most circle of -center most circle of
flower partsflower parts
FlowersFlowers
CarpelsCarpels -center most circle of -center most circle of
flower partsflower parts -one or more carpels -one or more carpels
form the pistilform the pistil
FlowersFlowers
CarpelsCarpels -center most circle of -center most circle of
flower partsflower parts -one or more carpels -one or more carpels
form the pistilform the pistil -the ovary is the base of -the ovary is the base of
the pistil, the style is the the pistil, the style is the stalk, and the stigma is stalk, and the stigma is at the top of the stalkat the top of the stalk
FlowersFlowers
CarpelsCarpels -center most circle of -center most circle of
flower partsflower parts -one or more carpels -one or more carpels
form the pistilform the pistil -the ovary is the base of -the ovary is the base of
the pistil, the style is the the pistil, the style is the stalk, and the stigma is stalk, and the stigma is at the top of the stalkat the top of the stalk
-ovules are located inside -ovules are located inside the ovarythe ovary
FlowersFlowers
CarpelsCarpels -center most circle of -center most circle of
flower partsflower parts -one or more carpels -one or more carpels
form the pistilform the pistil -the ovary is the base of -the ovary is the base of
the pistil, the style is the the pistil, the style is the stalk, and the stigma is stalk, and the stigma is at the top of the stalkat the top of the stalk
-ovules are located inside -ovules are located inside the ovarythe ovary
FlowersFlowers
Pollination Pollination
FlowersFlowers
PollinationPollination -transfer of pollen to -transfer of pollen to
stigmastigma
FlowersFlowers
PollinationPollination -transfer of pollen to -transfer of pollen to
stigmastigma -self pollination - pollen -self pollination - pollen
can fall from anther to can fall from anther to stigma on the same stigma on the same flowerflower
FlowersFlowers
PollinationPollination -transfer of pollen to -transfer of pollen to
stigmastigma -self pollination - pollen -self pollination - pollen
can fall from anther to can fall from anther to stigma on the same stigma on the same flowerflower
-cross pollination - pollen -cross pollination - pollen must be transferred from must be transferred from one flower to an otherone flower to an other
FlowersFlowers
FertilizationFertilization
FlowersFlowers
FertilizationFertilization -in angiosperms double -in angiosperms double
fertilization occursfertilization occurs
FlowersFlowers
FertilizationFertilization -in angiosperms double -in angiosperms double
fertilization occursfertilization occurs -one sperm fuses with -one sperm fuses with
egg to become the egg to become the zygotezygote
FlowersFlowers
FertilizationFertilization -in angiosperms double -in angiosperms double
fertilization occursfertilization occurs -one sperm fuses with -one sperm fuses with
egg to become the egg to become the zygotezygote
-other sperm fuses with 2 -other sperm fuses with 2 polar bodies to form a polar bodies to form a triploid (3N) endospermtriploid (3N) endosperm
FlowersFlowers
FertilizationFertilization -in angiosperms double -in angiosperms double
fertilization occursfertilization occurs -one sperm fuses with egg -one sperm fuses with egg
to become the zygoteto become the zygote -other sperm fuses with 2 -other sperm fuses with 2
polar bodies to form a polar bodies to form a triploid (3N) endospermtriploid (3N) endosperm
-endosperm is the food -endosperm is the food source for the developing source for the developing embryo (rice, corn, wheat)embryo (rice, corn, wheat)
Perfect FlowersPerfect Flowers
Contain Contain both male both male and female and female sex organssex organs
Imperfect FlowersImperfect Flowers
Contain only Contain only one sex on one sex on flowerflower
Staminate – Staminate – Male onlyMale only
Pistillate – Pistillate – Female onlyFemale only