Explanation:
Photosynthesis is the process by which green plants prepare their own food using sunlight, water, and carbon dioxide. During this process, plants absorb carbon dioxide from the air through tiny pores present on the surface of leaves called stomata. At the same time, water is absorbed by the roots from the soil and transported to the leaves. The green pigment chlorophyll present in plant cells captures sunlight and uses its energy to convert carbon dioxide and water into glucose. Glucose acts as food for the plant and provides energy for growth and development. Oxygen is produced as a by‑product of this chemical reaction and released into the atmosphere. Photosynthesis is extremely important for maintaining life on Earth because it produces the oxygen required for respiration by humans and animals. It also forms the foundation of most food chains because plants act as primary producers in ecosystems. The simplified equation of photosynthesis shows carbon dioxide and water producing glucose and oxygen in the presence of sunlight and chlorophyll. Because of its importance in biology and environmental science, questions about the role of carbon dioxide in photosynthesis frequently appear in school and competitive examinations.