U6 B3 1HVTTO

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

B3 Fertilization

• Put your things on your desk

       Book

       Notebook

• Bag on the floor
  
• Read pages 177-178

Lessongoals

• You can describe the steps that happen during the fertilization process in seed plants
• You can describe the change in the ovule after fertilization.

Homework U6 B3

Asgmt 1-7, no 4

OR challenge

Asgmt 5-10

Wheel of homework

Go to Lessonup.app and use this code

Reward

Penalty

A carpel consists out of different parts.
Which of these is NOT one of them?

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

The picture shows a magnolia tree. What do you call it when a flower at spot A pollinates a flower at spot B?

1. Cross-pollination
2. Species-pollination
3. Self-pollination
4. Insect-pollination

The flowers in the picture are:

1. Windflowers
2. Birdflowers
3. Insectflowers
4. Humanflowers

Which numbers show cross-pollination?

1. Only 1
2. 1, 2, 3, 4
3. 1, 4, 7
4. 1 and 4

Which numbers show self-pollination?

1. 2, 5, 6
2. 2, 3, 8
3. 2, 5, 8
4. 1, 3, 6

make pollen

Pollen grains are made in the pollen sac of an anther 

1

Pollination

Pollen grains land on the stigma of a flower of the same species.

2

make pollen

Pollen grains are made in the pollen sac of an anther 

1

Pollination

Pollen grains land on the stigma of a flower of the same species.

2

Pollen grains make a pollen tube

Pollen grains start making a pollen tube, they 'dig' their way towards an ovule. inside the pollen tube, they bring their nucleus.

3

make pollen

Pollen grains are made in the pollen sac of an anther 

1

Pollination

Pollen grains land on the stigma of a flower of the same species.

2

Pollen grains make a pollen tube

Pollen grains start making a pollen tube, they 'dig' their way towards an ovule. inside the pollen tube, they bring their nucleus.

3

Fertilization

Once the nucleus of the pollen grain reaches the ovule it fuses with the egg cell inside. The DNA in both nuclei is combined.

4

After fertilization

The fertilized egg cell. Will change into a plant embryo.

They ovule will change into a seed

5

Fertilization

The moment when the nucleus of the pollen grain and nucleus of the egg cell become one.

Egg cell

Egg cell nucleus

Pollen grain nucleus

Pollen tube

Every seed contains a plant embryo

www.bioplek.org

What is correct order?

1. Making pollen > pollination > fertilization > making a seed
2. Making pollen > fertilization > pollination > making a seed
3. making a seed > pollination > fertilization > Making pollen
4. pollination > Making pollen > making a seed > fertilization

multiple pollen grains land on the stigma of a buttercup (pictured): 2 of a sunflower, 5 of a buttercup and 4 of a dandelion.
The ovary of the flower, contains 2 ovules.

What is the maximum amount of fertilizations that can happen in this flower? (number)

1st choice: + OR Cheat sheet +1 cm2 OR Wheel

2nd and 3rd choice: Cheat sheet +1 cm2 OR Wheel

4th en 5th: Wheel 

TTO

What you should do: U6 B3

• Pages  177-182
• Asgmt  1-7, 4c

OR challenge

• Asgmt 5-10

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Working in Silence

• No asking questions
• Silent, don't disturb anyone
  
• Stay at your  desk

What you should do: U6 B3

• Pages 177-182
• Asgmt 1-7, no 4

OR challenge

• Asgmt 5-10

Done with the above?

• Work on the next chapter(s)
• Learn for the test 
• Make other homework
• Read a book

Working with whispering

• Teacher is available for questions
• Only whisper with the student next to you
• Stay at your  desk

Tidy Duty

Today these people are on tidy duty

• Desks: empty and straight
• Chairs:  underneath the desks
• Floor: no rubbish