Question

Describe an experiment to prove that carbon dioxide is necessary for photosynthesis

Answer 1

Aim: To test whether carbon di oxide is needed for photosynthesis
Materials needed: potted plants, bell jars, Petri dish, potassium hydroxide, water, alcohol, iodine, beakers
Method:
1. Take two potted plants and cover them with bell jars.
2. Place a Petri dish containing potassium hydroxide in one of the jars. (potassium hydroxide absorbs carbon dioxide.)
3. Place the plants in sunlight for a day.
4. Pluck a leaf from each of them and test the leaves for starch.
The plant in the jar with potassium hydroxide does not get any carbon dioxide. When you perform the iodine rest on a lead from this plant, it will tea negative for starch. This proves that photosynthesis did not occur in the absence of carbon dioxide. The leaf in the other plant will test positive for starch.

Answer 2

Answer:

here you're answer

Explanation:

Experiment to prove the necessity of carbon dioxide in photosynthesis - definition. Insert a part of the leaf of a destarched plant into a conical flask containing potassium hydroxide. Potassium hydroxide solution absorbs the carbon dioxide gas from the air present in the glass bottle. Leave the plant sunlight.