6.3 - fertilisation

• Biologie
• Middelbare school
• vmbo t
• Leerjaar 1

start task: 3.4 fertilisation

1. Copy the learning objectives.

2. Read pp 177-178

Learning goals. After this lesson, you can:

-describe the fertilization process in seed plants.

-describe the change in the ovule after fertilization.

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What is the name of part 7?

1. anther
2. petal
3. stamen
4. sepal

What is the name of part B?

1. filament
2. anther
3. stamen
4. carpel

Where is the stigma located?

1. 1
2. 2
3. 3

Where is the petal located?

1. 1
2. 2
3. 3
4. 4

Where is the ovary located?

1. 1
2. 2
3. 3

Pollen grains from a tulip are transferred to the stigma of a rose.
This is called 'pollination'.

1. true
2. false

Perfect flower(s)

= both sexes

Imperfect flower(s)

= one sex per flower

cross-pollination

self-pollination

male part

female part

carpel

stamen

Which numbers indicate cross-pollination?

1. 1, 4
2. 1, 4, 7
3. 7
4. 1, 3, 4

insect-pollinated flowers

Wind-pollinated flowers

green petals

nectar

Stamen inside the flower

Produce a lot of pollen

Scent

Brightly coloured petals

Sticky pollen

Put your chromebook away.

Have zuidschrift and pen ready!

Goals

• You can describe the fertilization process in seed plants.
• You can describe the change in the ovule after fertilization.

Pollen tube

Plant embryo

nucleus

• Gametes = sex cells (egg cell / sperm cell)

pollen tube:

a tube that grows from a pollen 

grain towards an ovule 

(in the ovary)

 

Fertilisation:

fusion of the nuclei (celkernen) of a pollen grain (male sex cell) and an egg cell (female sex cell)

Fertilised egg cell turns into a plant embryo (baby plant)

Ovule changes into a seed (contains embryo + nutrients).

Ovary becomes a fruit.

Ovules become seeds.

Egg cells become plant embryo's

What	Do assignments 1-7 pp 178-180
How
Help	.
Done?	Test yourself + flash cards in Bvj online.

1) book: text + figures pp 177-178

2) neighbour  

3 ) teacher

You may whisper and work together with your neighbour.

Only talk about the assignments.

Learning goals. After this lesson, you can:

-describe the fertilization process in seed plants.

-describe the change in the ovule after fertilization.

what have you learned?

Aan de slag

Zelfstandig aan het werk

6.3 maken en leren

Klaar? Afmaken 6.4

Ook klaar daarmee? Test jezelf + leren!

Dit heb je geleerd.

Je weet hoe je moet uit leggen wat er gebeurd bij een bevruchting van een zaadplant.

Je kan uitleggen wat een bevruchting van een zaadbeginsel is. 

There are 15 pollen that land on te stigma of the carpel (in the picture). How many seeds can this flower produce?

1. 1
2. 15
3. 20
4. 6