B2 - Pollination

Unit 6 Reproduction in plants and animals
Basic 2 Pollination
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Unit 6 Reproduction in plants and animals
Basic 2 Pollination

Slide 1 - Diapositive

Today

  • Recap
  • Homework check (3, 6 and 8)
  • Explanation 6.2 pollination 
  • Time to work
  • End

Slide 2 - Diapositive

Slide 3 - Diapositive

Pollen is made in ...
A
The anther
B
The ovary
C
The filament
D
The ovule

Slide 4 - Quiz

What are the names of the big and coloured leaves of a flower?
A
Ketals
B
Petals
C
Setals
D
Sepals

Slide 5 - Quiz

What part of a carpel is closest to the sepals?
A
Style
B
Stem
C
Stigma
D
Ovary

Slide 6 - Quiz

Learning objectives
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 7 - Diapositive

Basic 2 Pollination

Slide 8 - Diapositive

Nectar and pollen
  • Many flowers produce nectar
  • Nectar attracts insects
  • Insects get covered with pollen 
  • Insect goes to the next flower
  • Pollen lands on the stigma of a plant of the same species

Pollination
Pollination
The transfer of pollen from a stamen to the stigma of flower of the same species.

Slide 9 - Diapositive

Explain to your neighbour what happens at step 1, 2 and 3
timer
1:00

Slide 10 - Diapositive

No pollination if:
  • Pollen lands on the stigma of a flower of another species
What is a species?

Slide 11 - Diapositive

Self-pollination and cross-pollination

Slide 12 - Diapositive

Cross-pollination:
Pollen can also get onto the stigmas of flowers of a different plant (of the same species)
Self-pollination:
 - Pollen from the stamens can get onto the stigma of the carpel of the same flower.
- Pollen from one flower can then get onto the stigma of another flower on the same plant.

Slide 13 - Diapositive


Number 1 is...

A
Cross-pollination
B
Self-pollination
C
No pollination

Slide 14 - Quiz


Number 2 is...

A
Cross-pollination
B
Self-pollination
C
No pollination

Slide 15 - Quiz


Number 3 is...

A
Cross-pollination
B
Self-pollination
C
No pollination

Slide 16 - Quiz


Number 4 is...

A
Cross-pollination
B
Self-pollination
C
No pollination

Slide 17 - Quiz


Number 5 is...

A
Cross-pollination
B
Self-pollination
C
No pollination

Slide 18 - Quiz


Number 6 is...

A
Cross-pollination
B
Self-pollination
C
No pollination

Slide 19 - Quiz


Number 7 is...

A
Cross-pollination
B
Self-pollination
C
No pollination

Slide 20 - Quiz


Number 8 is...

A
Cross-pollination
B
Self-pollination
C
No pollination

Slide 21 - Quiz

insect-pollinated flowers
Wind-pollinated flowers

Slide 22 - Diapositive

Which flowers produce more pollen? Explain your answer.

Slide 23 - Question ouverte

insect- and wind-pollinated flowers
Differences in:
  • Size
  • Petals
  • Scent
  • Nectar
  • Pollen
  • Carpels and stamen

Slide 24 - Diapositive

insect-pollinated flowers
Wind-pollinated flowers
green petals
nectar
Stamen inside the flower
Produce a lot of pollen
Scent
Brightly coloured petals
Sticky pollen

Slide 25 - Question de remorquage

Slide 26 - Vidéo

Exercises
Read 6.2 + study the figures
 Make 1 to 9 of 6.2


Slide 27 - Diapositive