Bs 2: Pollination

Bs. 2 Pollination
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Slide 1: Tekstslide
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In deze les zitten 19 slides, met interactieve quizzen, tekstslides en 2 videos.

time-iconLesduur is: 120 min

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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