EVERYDAY SCIENCE

Detailed explanation-1: -Sunlight is essential for photosynthesis as the plant is kept in dark room for a week there is a lack of sunlight hence photosynthesis has not taken place.

Detailed explanation-2: -Sunlight is required for the plants to perform photosynthesis. Plants produce food from carbon dioxide and water only in the presence of sunlight. So, if kept in dark, the plants will not be able to perform photosynthesis and will eventually die.

Detailed explanation-3: -Photosynthesis is not performed by plants at night. Plants can only undergo photosynthesis at night if they are exposed to the appropriate wavelengths of artificial light. With the help of the chlorophyll pigment, light energy is absorbed. By the process of photosynthesis, light energy is turned into chemical energy.

Detailed explanation-4: -When a plant is kept in a dark room, it will be unable to perform photosynthesis. Without photosynthesis, the plant will not be able to make its own food and the plant will slowly die.

Detailed explanation-5: -Starch is a stored form of glucose in plants. Before experimenting on photosynthesis, the plant is kept in the dark for some hours to remove starch from the experimental leaf.