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1 of 34 © Boardworks Ltd 2007 Spreading seeds Will it grow? Making new plants Circle of life Review Contents Life cycles 1 of 34 © Boardworks Ltd 2007.

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Presentation on theme: "1 of 34 © Boardworks Ltd 2007 Spreading seeds Will it grow? Making new plants Circle of life Review Contents Life cycles 1 of 34 © Boardworks Ltd 2007."— Presentation transcript:

1 1 of 34 © Boardworks Ltd 2007 Spreading seeds Will it grow? Making new plants Circle of life Review Contents Life cycles 1 of 34 © Boardworks Ltd 2007

2 2 of 34 © Boardworks Ltd 2007 Look at these plants… How did they grow their fruits? What will happen to them? Why are they important? Spreading seeds

3 3 of 34 © Boardworks Ltd 2007 Spreading seeds

4 4 of 34 © Boardworks Ltd 2007 Spreading seeds

5 5 of 34 © Boardworks Ltd 2007 Spreading seeds

6 6 of 34 © Boardworks Ltd 2007 Spreading seeds Plenary 6 of 34 © Boardworks Ltd 2007

7 7 of 34 © Boardworks Ltd 2007 Contents Spreading seeds Will it grow? Making new plants Circle of life Review Life cycles 7 of 34 © Boardworks Ltd 2007

8 8 of 34 © Boardworks Ltd 2007 After seeds have been dispersed they start to grow a tiny root and a tiny shoot. We call this germination. Seeds will only germinate under certain conditions… What do you think a seed really needs to germinate? Water? Light? Warmth? Let’s plan a test to find out! No! I refuse to start growing unless I have my own dressing room, all my favourite foods, a personal assistant... Will it grow?

9 9 of 34 © Boardworks Ltd 2007 Will it grow?

10 10 of 34 © Boardworks Ltd 2007 Will it grow?

11 11 of 34 © Boardworks Ltd 2007 Will it grow?

12 12 of 34 © Boardworks Ltd 2007 Will it grow? Plenary 12 of 34 © Boardworks Ltd 2007

13 13 of 34 © Boardworks Ltd 2007 Contents Spreading seeds Will it grow? Making new plants Circle of life Review Life cycles 13 of 34 © Boardworks Ltd 2007

14 14 of 34 © Boardworks Ltd 2007 Let’s take a closer look at the different parts of this flower. The stigma is sticky to keep hold of the pollen. The style supports the stigma and connects it to the ovary. The ovary is where the ovules, or eggs, are. The anther is the part that makes the pollen. The filament holds up the anther. The petals attract insects. The sepal leaves protect the flower before it opens. Making new plants

15 15 of 34 © Boardworks Ltd 2007 There is something special about this flower; do you know what it is? The flower has both male and female organs! The stigma, style and ovary make up the female organ. This is called the carpel. The anther and filament make up the male organ. This is called the stamen. Making new plants

16 16 of 34 © Boardworks Ltd 2007 Making new plants

17 17 of 34 © Boardworks Ltd 2007 Insects are attracted to flowers by their bright colours, lovely smell and sweet tasting nectar. Pollen from the stamen sticks to the insects and gets carried to other flowers. Pollen brushes off the insect and onto the carpel. This is the process of pollination. Let’s see it in action! Although they have male and female parts, flowers need to spread their pollen around to reproduce. Making new plants

18 18 of 34 © Boardworks Ltd 2007 Making new plants

19 19 of 34 © Boardworks Ltd 2007 The pollen gets stuck on the stigma. Then, the pollen grows a tube down to the ovary. Fertilisation can now take place. Making new plants

20 20 of 34 © Boardworks Ltd 2007 Plenary Making new plants 20 of 34 © Boardworks Ltd 2007

21 21 of 34 © Boardworks Ltd 2007 Contents Spreading seeds Will it grow? Making new plants Circle of life Review Life cycles 21 of 34 © Boardworks Ltd 2007

22 22 of 34 © Boardworks Ltd 2007 Circle of life

23 23 of 34 © Boardworks Ltd 2007 Circle of life

24 24 of 34 © Boardworks Ltd 2007 Circle of life

25 25 of 34 © Boardworks Ltd 2007 It is important for animals and plants to reproduce. If they stopped reproducing, what do you think would happen? I’m a dodo bird. You might not have heard of me because my species died out over 300 years ago. We used to roam free on our very own island but then sailors discovered the island. They ruined our home and killed us for food. There weren’t many of us left to reproduce and so we sadly became extinct. Circle of life Eventually they would all die out.


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