BS 1 tm 3

BS 1 tm 3
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Slide 1: Diapositive
BiologieMiddelbare schoolvwoLeerjaar 1

Cette leçon contient 10 diapositives, avec quiz interactifs et diapositives de texte.

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BS 1 tm 3

Slide 1 - Diapositive

Learning goals 
bs 1 and 2
  1. you must be able to name the parts of a flower and its features and functions.

  2. you must be able to describe what pollination is. 
  3. And you must be able to tell the difference between cross-pollination and self-pollination.
  4. you must be able to list the features of insect-pollinated flowers and wind-pollinated flowers. 

Slide 2 - Diapositive

Slide 3 - Diapositive

Flowers
Corolla = petals 
Often big and colorful.  
Why is this useful for the flower?

Calyx = sepals 
Usually green. 
Why is this color useful for the flower?

Slide 4 - Diapositive

Photosynthesis
Green parts of a plant can do photosynthesis = make their own food out of sunlight, so they can grow! 

Slide 5 - Diapositive

Pollination - read carefully!
Self-pollination
Cross-pollination
No pollination
When pollen on the anther of a flower reaches the stigma of a flower on the same plant
When pollen from one plant reaches the stigma of a flower on another plant 
When pollen of one species (=soort) reaches the stigma of a flower of another species

Slide 6 - Question de remorquage

Self-pollination
Cross-pollination
No pollination
Number 1
Number 2
Number 3
Number 4
Number 5
Number 6
Number 7
Number 8

Slide 7 - Question de remorquage

Insect-pollinated flowers
Wind-pollinated flowers
The petals are colored 
The petals are small and green
The flowers have nectar and are scented
The flowers don't have nectar
Pollen sacs are outside the flower
Pollen sacs are inside the flower
Stigma is usually inside the flower
Stigma is usually outside the flower
Stigma are feathery 
pollen grains are rough and sticky
Pollen grains are smooth and light

Slide 8 - Question de remorquage

Fertilization
Fertilization is the moment that the nucleus of the pollen grain and the nucleus of the egg cell fuse (=versmelten)

Slide 9 - Diapositive

Slide 10 - Diapositive