Does photosynthesis produce or use up energy?

i believe it uses up the energy to produce their own food

Photosynthesis produces energy.

Explanation:

Photosynthesis produces energy from carbon dioxide, water and sunlight to make food (starch) that is in turn energy for the plant.

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.