1. Growing plants
S3 Science

2. Learning objectives Describe different ways of growing plants
Explain how strawberry plants use runners
Outline how cuttings can be taken to grow new plants
Draw a germinating seed
Through investigation, determine the things needed for seeds to germinate

3. Strawberries

4. Strawberry runners
Strawberry plants grown from runners have exactly the same _________ as each other and the parent plant. They are all __________ of the parent plant.

5. Cuttings

6. Testing rooting powder
Research question: Does rooting powder help cuttings to grow?

7. Rooting Powder Step 1: Cut off a section of stem.
Step 2: Remove the lower leaves.
Step 3: insert the cut end of the stem in rooting powder (Front bench only)
Step 4: Place compost in a pot. Break it up and wet it. Push your finger into the compost to make a hole. Place the cutting in the hole and pack the compost around the stem.
Step 5: Place in a plastic bag.
Step 6: After one week, carefully remove the cuttings. count the number of roots and measure their average length.

8. Results – with rooting powder
Student
Number
Mean length
Mean

9. Results – without rooting powder
Student
Number
Mean length
Mean

10. Presenting data Draw two bar charts mean length of roots (mm)
number of roots
mean length of roots (mm)

11. Conclusion
Answer the research question

12. Seed structure

13. Light Air Warmth Water Soil Oxygen
Germination
Draw a germinating seed
Label the roots, shoots and seed
Which things do you think that a seed needs to germinate? Choose the best four answers from the list.
Light Air Warmth Water Soil Oxygen

14. Where to plant seeds
Your problem is to advise a government about the best place to plant a new crop:

15. Method
Will the crop grow best in: Sandy desert, large plain, salty marsh or cold mountains?
Your seeds will be grown on filter paper within a Petri dish.
Draw the four Petri dishes and label the contents.
State where the dishes will be placed e.g. on a heater, window or fridge.
Design a simple results table
Think about how you will present your results.

16. Results Place Number of germinated seeds Warm wet plain
Hot sandy desert
Cold mountains
Salty marsh

18. Instructions
The purpose of this quiz is that you realise how much you have learnt!
Each group is to keep the scores of all three teams: Green Red and Blue
Answers are to be presented on the “Show Me!” boards.
The correct answer will be given after each question.

19. Q1 Strawberry plants can produce more strawberry plants by using:
Walkers
Joggers
Runners
Sprinters

20. Q1
C. Runners

21. Q2
State the term used to describe genetically identical plants or animals

22. Q2
Clones

23. Why are most of the leaves removed from a cutting?Q3
Why are most of the leaves removed from a cutting?

24. Q3
Reduce water loss

25. State the active ingredient in rooting powderQ4
State the active ingredient in rooting powder

26. Q4
Plant hormone or auxin

27. Q5
Name part C

28. Q1
Embryo

29. List three things needed for a seed to germinateQ6
List three things needed for a seed to germinate

30. Q6
oxygen
water
warmth

31. Q7
In which tube will the seeds germinate best?

32. Q7 A