How Plants Use Glucose for Life

Written by kelly smith
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How Plants Use Glucose for Life
Plants produce glucose during photosynthesis. (corn image by Cathy Kovarik from

Glucose, or sugar, is an energy source for living cells in plants, animals and humans. During photosynthesis, plants produce glucose, which is used to nourish the plant and to provide nutritional value to the living organisms that consume the plant.


Photosynthesis is the process in which plants use sunlight to convert water and carbon dioxide into usable energy. According to, glucose is the main carbohydrate produced during photosynthesis. Oxygen is produced as a byproduct of photosynthesis, which all animals need to support life.

Glucose Use

One way that plants use glucose is to form cellulose, which, according to "Science Clarified," makes up the cell walls of plants leaves and stems and provides dietary fibre for the animals and humans who consume the plants. "Science Clarified" explains that plants also convert glucose into starches, which can be stored as energy for later use.

Other Factors

Sunlight is necessary for plants to carry out photosynthesis. According to BBC's GCSE Bitesize, other factors that affect photosynthesis are temperature, carbon dioxide concentration and the amount and intensity of sunlight a plant receives. BBC explains that these factors affect the speed of photosynthesis and the rate of glucose production.

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