A student covered a leaf of a de-starched plant with a black paper strip and kept it in the garden outside his house in fresh air. In the evening, he tested the covered portion of the leaf for the presence of starch. By doing so the student was trying to show that : (a) CO2 is given out during respiration (b) CO2 is necessary for photosynthesis (c) Chlorophyll is necessary for photosynthesis (d) Light is necessary for photosynthesis

A student covered a leaf of a de-starched plant with a black paper str

1.	A student covered a leaf of a de-starched plant with a black paper strip and kept it in the garden outside his house in fresh air. In the evening, he tested the covered portion of the leaf for the presence of starch. By doing so the student was trying to show that : (a) CO2 is given out during respiration (b) CO2 is necessary for photosynthesis (c) Chlorophyll is necessary for photosynthesis (d) Light is necessary for photosynthesis
Answer» A student covered a leaf of a de-starched plant with a black paper strip and kept it in the garden outside his house in fresh air. In the evening, he tested the covered portion of the leaf for the presence of starch. By doing so the student was trying to show that : (a) $C O_{2}$ is given out during respiration (b) $C O_{2}$ is necessary for photosynthesis (c) Chlorophyll is necessary for photosynthesis (d) Light is necessary for photosynthesis