Plants use carbohydrates to build things such as cellulose. How do plants acquire these building blocks to build mass?

Plants acquire carbohydrates primarily through the process of photosynthesis, where they convert sunlight, carbon dioxide, and water into glucose. This glucose serves as a fundamental building block for synthesizing cellulose, which is a critical component of plant cell walls, providing structure and support. Additionally, plants can store excess glucose as starch, which can be broken down and used when needed for growth and energy. By utilizing these carbohydrates, plants effectively build their mass and develop their tissues.