Unit 7 - Fertilisation, seeds and fruit

Fertilisation, seeds and fruit
Unit 7 basics 3 + 4
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Fertilisation, seeds and fruit
Unit 7 basics 3 + 4

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Slide 2 - Diapositive

Petal fusion yes of no?

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What is fertilisation?

Slide 9 - Diapositive

Learning objectives
  • You must be able to describe the fertilisation process in seed plants.
  • You must be able to describe the changes that take place in the ovary after fertilisation.

Slide 10 - Diapositive

Fertilisation
  • Pollination:  Transferring the pollen from a stamen to a stigma of a carpel.
  • Fertilisation: The fusion of the nuclei of the male (gamete) sex cell and the female (gamete) sex cell.

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In what order does fertilisation happen?
A
Pollination -> Fertilisation -> Creation of the pollen tube
B
Pollination --> Creation of the pollen tube --> Fertilisation
C
Fertilisation --> Pollination --> Creation of the pollen tube
D
Fertilisation --> Creation of the pollen tube --> Pollination

Slide 15 - Quiz

Which part becomes fruit pulp after fertilisation
A
ovary
B
sepals
C
carpel
D
ovule

Slide 16 - Quiz

Has pollination and / or fertilisation happened here?
A
only pollination but no fertilisation
B
both pollination and fertilisation
C
only fertilisation, no pollination
D
no pollination and no fertilisation

Slide 17 - Quiz

What is fertilisation?
A
The release of the egg cell from the ovaries
B
The dividing of the zygote
C
Implantation of the zygote into the uterus wall
D
The union of an egg cell and sperm cell

Slide 18 - Quiz

An ovary of a certain flower contains six ovules. The egg cells of four of the ovules are fertilised; the egg cells of the other two remain unfertilised.
How many seeds will develop in this ovule?
A
6
B
4
C
2
D
0

Slide 19 - Quiz

A tulip grower wants to cultivate a new variety of tulip from two existing tulip varieties.

Will he use cross-pollination or self-pollination?
A
Cross-pollination
B
Self-pollination

Slide 20 - Quiz

Someone eats a handful of 18 peanut snacks. Each one contains a peanut. A peanut shell (the pod or fruit) usually has 2 peanuts.

How many ovules, ovaries and pollen grains were needed for this handful of peanuts?
Ovules
Ovaries
Pollen grains
18
9
18

Slide 21 - Question de remorquage

Avocado come from
ovaries with...
A
a single ovule
B
multiple ovules

Slide 22 - Quiz

Apple come from
ovaries with...
A
a single ovule
B
multiple ovules

Slide 23 - Quiz

What is the name of the part of the flower that becomes the fruit pulp?

Slide 24 - Question ouverte

Learning objectives achieved?
  • You must be able to describe the fertilisation process in seed plants.
  • You must be able to describe the changes that take place in the ovary after fertilisation.

Slide 25 - Diapositive

Next week
Last chance to ask questions for the minor test. So study for it: Unit 7 basics 1-4 and the bumble bee names (make and hand in your own determination key)

Starting with Unit 6 basics 1 and 2

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