Question

conduct the activity to study the factors (light,water) that essential for photosynthesis

Answer 1

Activity 1
Aim - Light is essential for photosynthesis of plants.
Materials Required - A potted plant, a black polythene.
Method -
1. Tie the black polythene on one leafed stem of the plant and leave it undisturbed for a few days.
2. Provide essential water to it.
Observation - The leaves on the particular stem are all dead
Conclusion - Plants require light to photosynthesize

Activity 2
Aim - To prove that water is essential for photosynthesis.
Materials Required - Potted plant
Method -
1. Keep the potted plant, provide essential light and nutrients to it.
2. Do not provide water.
Observation - The plant will die in a few days
Conclusion - This is because the plant needs water to photosynthesize, i.e. to produce food to live.