Equipment:
- Cress seeds
- Plastic trays
- Small shoe box
- Artificial light source
- Compost
- Lollipop sticks
- Water
Method:
1.Plant seeds as per instructions.
2.Water all trays.
3.Put trays into different types of light and label as below:
- Tray in shoe box with a hole at the side.
- Tray put in room with artificial light.
- Tray half covered with card.
- Tray on windowsill in full light.
- Tray in cupboard with no light.
Predictions:
A.I think the cress will move up to the sun.
- It won’t grow at all.
C .The part not covered will grow.
- It will grow fully.
- It will not grow at all.
Results:
- The cress grew towards the window in the box. The cress was light green and grew sideways towards the light/5cm.
- B. The cress grew the tallest (7cm) to try find light (very leggy). Sickly yellow /green colour.
- C. The half that was in the light had dark green leaves and the half under the cardboard was light green and the stems bent towards the light.
- Very healthy growth (lush) dark green coloured leaves (3/4cm).
- E. Very long stems (6/7cm) but leaves were yellow not green.
Conclusion:
Our investigation showed that seeds germinate without light but seedlings need real sunlight to grow properly and photosynthesize to make their own food.
