FLOWERS
_ _ _ _ _ _
PROTECT THE
FLOWER
MEANWHILE IS A
BUD.
_ _ _ _ _ _
ATTRACT
INSECTS AND
ANIMAL
POLLINATORS
_ _ _ _
_ _ _ _ _ _
STAMEN
PISTIL
PRODUCE
POLLEN
GRAINS
OVARY IS THE
BASE OF
PISTIL
IN THE ANTHER IS
PRODUCED THE
POLLEN
STIGMA: SITE
OF
POLLINATION
INSIDE AN
OVARY, EGG
CELLS: OVULES
_ _ _ _ _ _
_ _ _ _ _ _
_ _ _ _
_ _ _ _ _ _
FLOWERS
SEPALS
PETALS
PROTECT THE
FLOWER
MEANWHILE IS A
BUD.
ATTRACT
INSECTS AND
ANIMAL
POLLINATORS
MALE
FEMALE
STAMEN
PISTIL
PRODUCE
POLLEN
GRAINS
OVARY IS THE
BASE OF
PISTIL
IN THE ANTHER IS
PRODUCED THE
POLLEN
STIGMA: SITE
OF
POLLINATION
INSIDE AN
OVARY, EGG
CELLS: OVULES
A flower is pollinated when a
pollen grain lands on its
stigma.
Each carpel grows into a
fruit which contains the
seeds.
POLLINATION
Organize the following words :
anther - to the – poller grains
– from the – stigma – of transfer
POLLINATION IS THE
TRANSFER OF
POLLEN GRAINS
FROM THE AHTHER
TO THE STIGMA.
Some flowers secrete a sugary
liquid(nectar), which pollinators
use as food.
As an animal explores these
flowers, pollen sticks on its body.
When animals wanders away, it
tranfers the pollen to the stigma of
another flower.
Fertilization
Pollen
grain
Two
sperms
#2
#1
zygote
Stigma
Two nuclei
A pollen
tube
The tissue
of the
pistil
Ovule
Egg cells
Pollen grains germinate on the
stigma, growing down the style
to reach an ovule.
Fertilized ovules develop into
seeds.
The carpel enlarges to form
the flesh of the fruit and to
protect the ovary.
POLLINATION IS NOT THE
EQUIVALENT OF FERTILIZATION.
FERTILIZATION INVOLVES THE
UNION OF EGG AND SPERM AND
MAY NOT OCCUR UNTIL WEEKS OR
MONTHS AFTER POLLINATION HAS
TAKEN PLACE.
FERTILIZATION CAUSES RAPID
CHANGES TO OCCUR IN FLOWER.
1.
The ovule develops into a seed, often with a
tough coat protecting the developing plant and
its supply.
2. The ovary grows larger and develop into a
fruit(enlarged ovary of plant that contains seeds)
Flowering plants use the wind,
insects, bats, birds and
mammals to transfer pollen
from the male (stamen) part of
the flower to the female
(stigma) part of the flower.
Seeds dispersal:
Seeds are dispersed in many
different ways:
Wind
Explosion
Water
Animals
Birds
Scatter
Some seeds are hidden in the
ground as a winter store.
Some fruits have hooks on
them and cling to fur or
clothes.
Birds and animals eat the fruits
and excrete the seeds away
from the parent plant.
GERMINATION IS:
The growth of the root through the
seed coat,
GERMINATION IS:
The growth of the root through the
seed coat,
WEB PAGES:
http://fr.slideshare.net/Lolit2552/pollinati
on-fertilisation-and-germination
https://www.wethersfield.k12.ct.us/uploa
ded/schools/Wethersfield_High_School/N
orris/Reprod2.pdf
http://fr.slideshare.net/Lolit2552/pollinati
on-fertilisation-and-germination