In oxygenic photosynthesis in plants, which set lists the primary inputs (reactants) required to produce sugars and oxygen?

• A. Carbon dioxide, water, and light energy
• B. Water, oxygen, and ATP
• C. Oxygen, glucose, and light energy
• D. Carbon dioxide and glucose only

Answer: (A)

Verified step by step guidance

1. Understand that oxygenic photosynthesis is the process by which plants convert light energy into chemical energy, producing sugars and oxygen as products.
2. Recall the general photosynthesis equation: \$6\,CO_2 + 6\,H_2O + light\ energy \rightarrow C_6H_{12}O_6 + 6\,O_2$.
3. Identify the primary inputs (reactants) on the left side of the equation: carbon dioxide (\(CO_2\)), water (\(H_2O\)), and light energy.
4. Recognize that oxygen (\(O_2\)) and glucose (\(C_6H_{12}O_6\)) are products, not reactants, so they should not be listed as inputs.
5. Conclude that the correct set of primary inputs required to produce sugars and oxygen in oxygenic photosynthesis is carbon dioxide, water, and light energy.