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The diagram shows a young seedling grown from a germinated seed - Junior Cycle Science - Question a - 2007
Question a
The diagram shows a young seedling grown from a germinated seed. (i) List three conditions necessary for seeds to germinate. Condition 1 ________________ Condition... show full transcript
Worked Solution & Example Answer:The diagram shows a young seedling grown from a germinated seed - Junior Cycle Science - Question a - 2007
Step 1
Step 2
Step 3
Describe, using labelled diagrams in the box provided, an investigation to show that any two of the conditions that you have given are required for seeds to germinate.
Answer
To investigate the necessity of water and oxygen for seed germination, set up four containers A, B, C, and D:
- Container A: Put seeds on wet cotton wool (providing water and air).
- Container B: Place seeds on dry cotton wool in an airtight container (no air but with moisture).
- Container C: Place seeds in oil (no water and no air).
- Container D: Seeds in boiling water (water but no air).
All containers should be kept in warm conditions (15-20°C).
Control: Container B can serve as a suitable control, as it allows for the effect of moisture without air presence. The expected outcome is that seeds in container A should germinate, while those in containers B, C, and D should not germinate, demonstrating the importance of both water and oxygen.