B4 Fruits and seeds

Basic 4
Fruits and seeds
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Slide 1: Tekstslide
BiologieMiddelbare schoolhavo, vwoLeerjaar 1

In deze les zitten 17 slides, met interactieve quizzen, tekstslides en 2 videos.

time-iconLesduur is: 45 min

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Basic 4
Fruits and seeds

Slide 1 - Tekstslide

Today
* Revision B3
* B4 fruits and seeds

Slide 2 - Tekstslide

Revision
B3 Fertilisation

Slide 3 - Tekstslide

Ovary
Pollen grain
Stigma
Pollen tube
Nucleus o.a. pollen grain
Style
Ovule
Egg cell
Nucleus o.a. egg cell

Slide 4 - Sleepvraag

Slide 5 - Video

Pollination is the transfer from….?
A
stigma to anther
B
style to stamen
C
ovule to filament
D
anther to stigma

Slide 6 - Quizvraag

The two mechanisms for pollination are?
A
Wind and water
B
Insect and wind
C
Insect and water
D
Wind and cows

Slide 7 - Quizvraag

Cross-pollination…

A
Increases variation
B
Decreases variation
C
Is only performed by insects
D
Is only performed by wind

Slide 8 - Quizvraag

Flowers are adapted for wind-pollination by…
A
Having bright petals and a scent
B
Having nectar
C
Having feathery stigmas
D
Having sticky pollen grains

Slide 9 - Quizvraag

B4 Fruits and seeds
You must be able to describe the changes that take
place in the ovary after fertilisation.

Slide 10 - Tekstslide

Talk in pairs
Which fruits or seeds do you know?
Can you name a fruit containing only one seed?
Can you name a fruit containing a few seeds?
Can you name a fruit containing many seeds?
timer
3:00

Slide 11 - Tekstslide

Slide 12 - Video

Slide 13 - Tekstslide

Slide 14 - Tekstslide

Slide 15 - Tekstslide

Slide 16 - Tekstslide

Do exercises
1 + 2
4 + 7

Slide 17 - Tekstslide