Question

which is the word equation for photosynthesis?
○ carbon + hydrogen + oxygen → glucose + water
○ glucose + water → carbon dioxide + oxygen
○ carbon dioxide + water → glucose + oxygen
○ glucose + oxygen → carbon + water + oxygen

Explanation:

Photosynthesis is the process by which plants use carbon dioxide (from the air) and water (from the soil), along with light energy, to produce glucose (a sugar) and oxygen. The correct word equation should have carbon dioxide and water as reactants and glucose and oxygen as products. The first option has incorrect reactants, the second is the reverse (like respiration), and the fourth is incorrect. The third option matches the reactants (carbon dioxide + water) and products (glucose + oxygen) of photosynthesis.

Answer:

C. carbon dioxide + water → glucose + oxygen (assuming the third option is labeled C; if the original options have labels like A, B, C, D, adjust the label as per the original, but based on the content, the correct one is the third option with reactants carbon dioxide and water, products glucose and oxygen)