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Bs 2: Pollination
Bs. 2 Pollination
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Slide 1:
Tekstslide
Biologie
Middelbare school
vwo
Leerjaar 1
In deze les zitten
19 slides
, met
interactieve quizzen
,
tekstslides
en
2 videos
.
Lesduur is:
120 min
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Onderdelen in deze les
Bs. 2 Pollination
Slide 1 - Tekstslide
What are we going to do today?
Repeat bs 1 and bs 2 (10-15 min)
Make exercises (20 min)
Kahoot
Slide 2 - Tekstslide
At the end of this class
...You can describe what pollination is.
...You can explain the difference between cross-pollination and self-pollination.
...You can list the features of insect-pollinated flowers and wind-pollinated flowers.
Slide 3 - Tekstslide
Stamen
petal
sepal
Carpel
Slide 4 - Sleepvraag
What is the function of the calyx (sepals)?
A
attract insects
B
reproduction
C
protection against cold
D
producing pollen
Slide 5 - Quizvraag
What is the male sex organ of a plant? And the female sex organ?
A
female: carpel male: petal
B
female: petal male: sepal
C
female: stamen male: carpel
D
female: carpel male: stamen
Slide 6 - 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 7 - Tekstslide
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!
Slide 8 - Tekstslide
Self-pollination:
Pollen from stamen to stigma of the same flower,
Pollen from one flower onto the stigma of another flower on the
same plant
,
Cross-pollination:
Pollen can also get onto the stigmas of flowers of a
different plant
(of the
same
species).
Slide 9 - Tekstslide
Insect-pollinated flowers
Large and
colorful petals,
Nectar,
Small amount of pollen
Wind-pollinated
flowers
Flowers small and not colorful,
Produce large amount of pollen,
Anthers often hang out of flower,
Stigma's large and feathery.
Slide 10 - Tekstslide
What is self-pollination?
Slide 11 - Open vraag
Which numbers indicate
self-pollination?
A
1
B
1 and 4
C
1 and 3
D
1,2,3
Slide 12 - Quizvraag
Insect-pollinated flower
Wind-pollinated flower
bright coloured petals
flowers are scented and contain nectar
pollen grains rough and sticky
small flowers
produce many pollen
stamen and stigma inside the flower
stigma are feathery and outside the flower
Slide 13 - Sleepvraag
Time to work!
Make exercises below (if not finished yet):
Bs 1: 1, 2, 3, 5
Bs 2: 1, 2, 3, 5, 6 + 8
What you don't finish is homework!
Done?
Make summary bs 1 + bs 2 @studiewijzer
Slide 14 - Tekstslide
After fertilisation
A germ/plant embryo develops from the fertilised egg cell
The ovule develops into seeds
The ovary grows into fruit containing more seeds
pod
Slide 15 - Tekstslide
Slide 16 - Tekstslide
flower stalk
sepal
ovary
stamen
petal
ovule
Slide 17 - Sleepvraag
Slide 18 - Video
Slide 19 - Video
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