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> Unit 6 Flowers, fruits and seeds
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- Textbook Unit 6 Reproduction in plants and animals
- Notebook
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Slide 1:
Slide
Biologie
Middelbare school
havo, vwo
Leerjaar 1
This lesson contains
39 slides
, with
interactive quizzes
,
text slides
and
2 videos
.
Lesson duration is:
30 min
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Items in this lesson
Have ready
- Textbook Unit 6 Reproduction in plants and animals
- Notebook
Slide 1 - Slide
Warming up...
Drag and drop the items to the correct place
Slide 2 - Slide
root
stem
flower
leaf
fruit
Slide 3 - Drag question
BS 1 and 2 Learning goals
You can name the parts of a flower and their functions
You can describe what pollination is
Slide 4 - Slide
Flowers seeds and fruits
Flowers are the
reproductive
organs
of a plant
They contain both male and female sex organs
Many flowers have bright colors. Why would that be?
Slide 5 - Slide
Slide 6 - Slide
Use the figure in basic 6.1
Slide 7 - Slide
anther
filament
petal
sepal
stigma
style
ovary
nectary
Slide 8 - Drag question
Get to work
Make assignment 1, 3, 5b and c, 6 and 7
This is homework
Slide 9 - Slide
Bs 2. Pollination
Pollination
: when pollen get on the stigma of a carpel
Slide 10 - Slide
Pollination
Pollination
: when pollen get on the stigma of a carpel
- Self-pollination
: pollen can get onto the stigma of the carpel of the same flower
- Cross-pollination
: pollen get onto the stigmas of a different plant
(of the
same
species)
Slide 11 - Slide
Cross-pollination
Self-pollination
Slide 12 - Slide
Which number(s) indicate self-pollination?
Slide 13 - Slide
Which numbers indicate self-pollination?
A
1
B
1 and 4
C
1 and 3
D
1,2,3
Slide 14 - Quiz
Insect pollination
Wind pollination
Slide 15 - Slide
Insect and wind pollinated flowers
Slide 16 - Slide
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 17 - Drag question
The stamens in some plant species The stamen in some plants ripen earlier than the carpels.
What does this prevent?
Slide 18 - Open question
Not only insects pollinate flowers...
Slide 19 - Slide
Let's make assignment 5 together
Go to unit 6.2 Pollination
Slide 20 - Slide
Get to work
BS 1. Make assignment 1, 3, 5b and c, 6 and 7 (old homework)
BS 2. Make assignment 1, 2, 3, 6, 7
Slide 21 - Slide
End of the lesson
Do your homework B1 and 2
Slide 22 - Slide
Lessonstarter
You remember last lessons subject?
BS 2. try to make assignment
1, 3, 6, 7, 8 and 9
You have 10 minutes to complete them all!
timer
10:00
Slide 23 - Slide
Have ready
- Textbook Unit 6 Reproduction in plants and animals
- LessonUp
- Notebook
Slide 24 - Slide
What is the function of the calyx (sepals)?
A
attract insects
B
reproduction
C
protection against cold
D
producing nectar
Slide 25 - Quiz
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 26 - Quiz
What is self-pollination?
Slide 27 - Open question
From pollination to----> fertilization (in plants)
Slide 28 - Slide
FERTILIZATION
The pollen grain lands on the stigma
The pollen forms a tube and the nucleus goes down the style
The pollen nucleus melts together with the egg nucleus in the ovule to form a seed.
Slide 29 - Slide
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 30 - Slide
Slide 31 - Slide
flower stalk
sepal
ovary
stamen
petal
ovule
Slide 32 - Drag question
Slide 33 - Video
Slide 34 - Video
Dispersal of fruits and seeds
Plants disperse the seeds themselves by ejecting the seeds over a distance
Seeds are dispersed by wind
Seeds are dispersed by animals and humans
Slide 35 - Slide
Which part becomes fruit pulp after fertilisation
A
ovary
B
sepals
C
carpel
D
ovule
Slide 36 - Quiz
How does a pollen grain nucleus reaches the ovule?
Slide 37 - Open question
In the video you saw an example of seed dispersal by
A
the wind
B
the plant itself
C
animals
Slide 38 - Quiz
Find a nice photo of seed dispersal by animals
Slide 39 - Open question
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