Which of the following are required for photosynthesis to occur in plants?

• A. Carbon dioxide, water, and sunlight
• B. Carbon dioxide, oxygen, and ATP
• C. Oxygen, glucose, and sunlight
• D. Nitrogen, water, and darkness

Answer: (A)

Verified step by step guidance

1. Step 1: Understand the process of photosynthesis. Photosynthesis is the process by which plants convert light energy into chemical energy stored in glucose. It occurs in the chloroplasts of plant cells and requires specific inputs.
2. Step 2: Identify the key reactants involved in photosynthesis. The chemical equation for photosynthesis is: ${6\mathrm{CO}2}_{}+{6H2O}_{}\to {C6H\mathrm{12}O6}_{}+{6O2}_{}$. This shows that carbon dioxide (CO₂), water (H₂O), and sunlight are required.
3. Step 3: Eliminate incorrect options based on the reactants and products of photosynthesis. Oxygen is a product, not a reactant, so options including oxygen as a requirement are incorrect. ATP is produced during cellular respiration, not photosynthesis, so options including ATP are also incorrect.
4. Step 4: Consider the environmental conditions necessary for photosynthesis. Darkness and nitrogen are not involved in the process of photosynthesis, so options including these are incorrect.
5. Step 5: Conclude that the correct answer is the option listing carbon dioxide, water, and sunlight, as these are the essential components required for photosynthesis to occur in plants.