Why does photosynthesis represent a chemical change

Photosynthesis is an endothermic reaction. This means it cannot occur without energy from the Sun. The light required is absorbed by a green pigment called chlorophyll in the leaves. Chlorophyll is found in chloroplasts in plant cells , particularly the palisade and spongy mesophyll cells. Plant leaves are the main photosynthetic organ , but other parts of the plant exposed to the light can develop chlorophyll and photosynthesise. The carbon dioxide required for photosynthesis comes from the air.

It enters leaves through the stomata. Water enters the plant through the roots, and is transported to the leaves in the xylem. Oxygen is formed as the waste product.

Book a free class. Book a free class Join class now already booked a class? Allied solutions. Book a free class now. Physical and Chemical Changes Exercise. Matter and its Composition 2.

Physical and Chemical Changes 3. Elements, Compounds and Mixtures 4. Atomic Structure 5. Language of Chemistry 6.

Metals and Non-Metals 7. Exercise 2. Tags: photosynthesis , glucose , cellulose , starch , respiration , sunlight , endothermic , chemical reaction , chlorophyll , carbon dioxide , product , reactant , water , energy , reaction.

Chemical Reactions in Photosynthesis Science Games. Sign me up now! Concepts Covered The reactants in the process of photosynthesis are carbon dioxide, water, and sunlight. For Teachers. For Schools. For Districts.