Question

In photosynthesis why don't the plants use the glucose which they make directly rather than converting the glucose into starch and again converting it into glucose when they need it for their utilisation?

Answer 1

In photosynthesis, glucose is produced in plants. Glucose is immediately soluble and canot get stored but starch is insoluble. Thus it is converted into starch so that it cannot escape from the cells. Also cells can not use starch directly making it more stable compound for storage. Later the stored starch is converted into glucose by the cells to release energy by respiration.