1. Predict your observation on plant B after 5 days.
Answer: Plant B will die.
2. What inference can you make for your answer in (1)?
Answer: Plant B cannot produce food without sunlight.
3. Based on the investigation above,
(i) what is changed? (ii) what is observed?
Answer: (i) The presence of sunlight (ii) The condition of plants.
4. Write one hypothesis for the investigation above.
Answer: Green plants need sunlight to stay alive.
