2.7. Melting together

• Biologie
• Middelbare school
• vmbo t, mavo, havo
• Leerjaar 1

LESSON 15

• Repeat 2.6. 
• 2.7. Melting together
• Do your homework

What is pollination?

Is this a perfect flower or a imperfect flower?

1. perfect flower
2. imperfect flower

If the stigmas are small, it is a ....

1. insect-pollinated flower
2. wind-pollinated flower

Represents situation 1 no pollination, self-pollination or cross-pollination?

1. no pollination
2. self-pollination
3. cross-pollination

Represents situation 2 no pollination, self-pollination or cross-pollination?

1. no pollination
2. self-pollination
3. cross-pollination

2.7. Melting together

• Sex cells are cells, so they also contain a nucleus. 

2.7. Melting together

• Sex cells are cells, so they also contain a nucleus. 
• When the nucleus of the male sex cell from a pollen grain fuses together with the nucleus of an egg cell inside the ovary, this is called fertilisation (bevruchting). 

2.7. Melting together

• The ovule becomes the seed with the embryo inside it. 

2.7. Melting together

• The ovule becomes the seed with the embryo inside it. 
• The plant embryo kan germinate when it finds a suitable piece of soil. 

2.7. Melting together

• The ovule becomes the seed with the embryo inside it. 
• The plant embryo kan germinate when it finds a suitable piece of soil. 
• The sepals and petals of a fertilised flower will dry and shrivel.

2.7. Melting together

• The ovule becomes the seed with the embryo inside it. 
• The plant embryo kan germinate when it finds a suitable piece of soil. 
• The sepals and petals of a fertilised flower will dry and shrivel.
• The ovary starts to swell and ripen. A ripened ovary is called a fruit. 

HOMEWORK

Tuesday 25 January

Complete the Google Form '2.7. Melting together' on Google Classroom