In deze les zitten 31 slides, met interactieve quizzen en tekstslides.
Lesduur is: 45 min
Onderdelen in deze les
6.7 dispersal of fruits and seeds
Programma:
Uitleg Basisstof 6.7
Hw maken en jezelf nakijken
Waar vind je de oefentoetsen?
Slide 1 - Tekstslide
How are your potato-offshoot(s) doing?
Slide 2 - Open vraag
How can seeds be dispersed (=spread out)?
Slide 3 - Woordweb
6.7 dispersal of fruits and seeds
By the plant itself
Shoots or slings them away when they are ripe
Cranesbill
Slide 4 - Tekstslide
Slide 5 - Tekstslide
trough tasty and nutricious *fruit pulp
small hooks
or sticky coating
by animals
or by forgetting!?
???
Slide 6 - Tekstslide
www.britannica.com
Slide 7 - Link
Dispersal by the wind
Maple tree
Linden
Dandelion
Slide 8 - Tekstslide
Dispersal by water
Slide 9 - Tekstslide
Why is it so important that plants disperse their seeds?
Slide 10 - Open vraag
6.7 dispersal of fruits and seeds
Read pages 212-214
& make assignments 1, 2 en 3
ready? work on potato research report. (write introduction using basic 6.5)
Or make summaries of basics 1-4 + 7
Slide 11 - Tekstslide
Photosynthesis
Sunlight
Carbondioxide
Glucose
Oxygen
Water
Slide 12 - Sleepvraag
roots provide support and uptake of nutrients
water uptake
seed development
making food: photosynthesis
mineral uptake
provide support
Slide 13 - Sleepvraag
Photosynthesis
Slide 14 - Tekstslide
root
stem
flower
leaf
fruit
Slide 15 - Sleepvraag
ROOTS
STEMS & LEAVES
FLOWERS
FRUITS
Slide 16 - Sleepvraag
Put the right word at the right picture
Pollination
Seedling
Seed
Germination
Fruits
Slide 17 - Sleepvraag
Put the events in the right order
1
2
3
4
5
6
7
8
ovary becomes fruit
egg cell becomes plant embryo
ovule becomes seed
pollination
pollen is taken to a flower
fertilization
pollen makes pollen tube
pollen is made
Slide 18 - Sleepvraag
Which mechanism for dispersal is used by the seed shown in the picture?
A
The plant itself
B
Animals
C
The wind
Slide 19 - Quizvraag
Which mechanism for dispersal is used by the seed shown in the picture?
A
The plant itself
B
Animals
C
The wind
Slide 20 - Quizvraag
The native North Americans called this plant ‘white man’s footsteps’ because these plants grew where the colonists walked. What kind of seeds do these plants have?
A
Big seeds
B
Light weight seeds
C
Seeds with fluffs
D
Sticky seeds
Slide 21 - Quizvraag
What is the function of the fruit around the seeds?
A
protection of the seeds
B
dispersal of the seeds
C
nutrition for seed development
D
all are true
Slide 22 - Quizvraag
How is this coconut seed dispersed?
A
by animals
B
by the wind
C
by water
D
not at all
Slide 23 - Quizvraag
Structure of flower
Even though there are many different flowers, most of them have the same parts.
Stamen: male reproductive organ
Pollen: male sex cells
Carpel: female reproductive organ
(stigma, style, ovary)
egg cell: female sex cell
Slide 24 - Tekstslide
STYLE
PETAL
Carpel
ANTHER
SEPAL
OVARY
STIGMA
STAMEN
FILAMENT
Slide 25 - Sleepvraag
GROWTH
Germination
Pollination
Fertilisation
Seed formation
Seed dispersal
Slide 26 - Sleepvraag
Protects the seed.
Contains a food reserve.
The start of a new plant.
The seeds absorbs water through this.
Plant embryo.
Pore.
Seed coat.
Seed leaves.
Slide 27 - Sleepvraag
wind pollinated flower
insect pollinated flower
Slide 28 - Sleepvraag
Pollination: transferring pollen from stamen to stigma.
Pollen grains do then have to get onto the stigma of the flower of the same plant species!