B2 - Pollination

• Biologie
• Middelbare school
• mavo, havo, vwo
• Leerjaar 1

Unit 6 Reproduction in plants and animals

Basic 2 Pollination

Today

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

Pollen is made in ...

1. The anther
2. The ovary
3. The filament
4. The ovule

What are the names of the big and coloured leaves of a flower?

1. Ketals
2. Petals
3. Setals
4. Sepals

What part of a carpel is closest to the sepals?

1. Style
2. Stem
3. Stigma
4. Ovary

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.

Basic 2 Pollination

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.

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

No pollination if:

• Pollen lands on the stigma of a flower of another species

What is a species?

Self-pollination and cross-pollination

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.

Number 1 is...

1. Cross-pollination
2. Self-pollination
3. No pollination

Number 2 is...

1. Cross-pollination
2. Self-pollination
3. No pollination

Number 3 is...

1. Cross-pollination
2. Self-pollination
3. No pollination

Number 4 is...

1. Cross-pollination
2. Self-pollination
3. No pollination

Number 5 is...

1. Cross-pollination
2. Self-pollination
3. No pollination

Number 6 is...

1. Cross-pollination
2. Self-pollination
3. No pollination

Number 7 is...

1. Cross-pollination
2. Self-pollination
3. No pollination

Number 8 is...

1. Cross-pollination
2. Self-pollination
3. No pollination

insect-pollinated flowers

Wind-pollinated flowers

Which flowers produce more pollen? Explain your answer.

insect- and wind-pollinated flowers

Differences in:

• Size
• Petals
• Scent
• Nectar
• Pollen
• Carpels and stamen

insect-pollinated flowers

Wind-pollinated flowers

green petals

nectar

Stamen inside the flower

Produce a lot of pollen

Scent

Brightly coloured petals

Sticky pollen

Exercises

Read 6.2 + study the figures

 Make 1 to 9 of 6.2