Unit 6.2

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

Unit 6.2

Recap Monday

1. What is the function of the bright colored Patels?

2. What is the male reproductive organ of a plant? 

3. What is the female reproductive organ of a plant?

Male/female or both?

Male/female or both?

Male/female or both?

Flower parts with features and functions:  

kenmerken en functies   

Sepals

Petals

Stamen

Carpel

Male reproductive organ

Stigma, style and ovary

To attract insects

Produce egg cells (female sex cells) in ovum

Filaments and anther with pollen sacs

Produce pollen grains (male sex cells)

To protect the flower bud against cold and dehydration

Large and brightly coloured, sometimes small and green

Usually green

Learning goals

1. You can describe what pollination is.
   
2. You can explain the difference between cross-pollination and self-pollination.
   
3. You can list the features of insect-pollinated flowers and wind-pollinated flowers.
   

Pollination

Transferring pollen from a stamen to the stigma is called pollination.

Cross-pollination vs self-pollination

Insect pollinated flowers

Wind pollinated flowers

Get to work

Make BS6.2 ex. 1 to 3 

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

BS6.2 

Recap previous lesson 

Work on the assignments 

Discuss some assignments

Closure 

What is pollination?

If pollen from the stamens gets onto the stigma of the same flower, it is

1. Cross-pollination
2. Self-pollination

If pollen gets onto the stigma of a flower of a different plant (of the same species), it is

1. Cross-pollination
2. Self-pollination

Self-pollination

Cross-pollination

No pollination

Number 1

Number 2

Number 3

Number 4

Number 5

Number 6

Number 7

Number 8

Insect-pollinated flowers

Wind-pollinated flowers

The petals are coloured 

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 (geveerde vorm)

pollen grains are rough and sticky

Pollen grains are smooth and light

Get to work

From BS6.2 make assignments 5 to 8. 

Done? Make assignment 10 (extra)