flowers stamenpistil attract insects and animal pollinators _ _ _ protect the flower meanwhile is a...
TRANSCRIPT
FLOWERS
STAMEN PISTIL ATTRACT
INSECTS AND ANIMAL
POLLINATORS
_ _ _ _ _ _
PROTECT THE FLOWER
MEANWHILE IS A BUD.
_ _ _ _ _ _ _ _ _ __ _ _ _ _ _
IN THE ANTHER IS PRODUCED THE
POLLEN
STIGMA: SITE OF
POLLINATION
PRODUCE POLLEN GRAINS
INSIDE AN OVARY, EGG
CELLS: OVULES
OVARY IS THE BASE OF
PISTIL
_ _ _ _ _ _S E P A L S
_ _ _ _ _ _P E T A L S
_ _ _ _M A L E
_ _ _ _ _ _MF E ELA
FLOWERS
STAMEN PISTIL ATTRACT
INSECTS AND ANIMAL
POLLINATORS
PETALS
PROTECT THE FLOWER
MEANWHILE IS A BUD.
MALE FEMALESEPALS
IN THE ANTHER IS PRODUCED THE
POLLEN
STIGMA: SITE OF
POLLINATION
PRODUCE POLLEN GRAINS
INSIDE AN OVARY, EGG
CELLS: OVULES
OVARY IS THE BASE OF
PISTIL
A flower is pollinated when a pollen grain lands on its
stigma.Each carpel grows into a fruit which contains the
seeds.
POLLINATIONOrganize 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.
WELL DONE!
Some flowers secrete a sugary liquid(nectar), which pollinators
use as food.
Example:
https://www.youtube.com/watch?v=MQiszdkOwuU
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.
https://www.youtube.com/watch?v=PKyC2GZd2dE
Fertilization
Pollen grain
Stigma
The tissue of the pistil Ovule
zygote
Two sperms
Egg cellsA pollen tube
reaches
Growing throughinto contains
containsTr
avel
thro
ugh
Fuses with
To form
#1
#2
Two nuclei
insidefuses
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:WindExplosionWaterAnimalsBirdsScatter
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/pollination-fertilisation-and-germination
https://www.wethersfield.k12.ct.us/uploaded/schools/Wethersfield_High_School/Norris/Reprod2.pdf
http://fr.slideshare.net/Lolit2552/pollination-fertilisation-and-germination