During photosynthesis, what energy transformation primarily occurs in plant cells?

• A. Thermal energy is converted into kinetic energy used for cell movement
• B. Light (radiant) energy is converted into chemical energy stored in glucose
• C. Chemical energy stored in glucose is converted into light (radiant) energy
• D. Electrical energy is converted into mechanical energy to drive muscle contraction

Answer: (B)

Verified step by step guidance

1. Identify the source of energy that plants use during photosynthesis, which is primarily light energy from the sun.
2. Understand that photosynthesis is the process by which plants convert light energy into a form of energy they can store and use, specifically chemical energy.
3. Recognize that the chemical energy is stored in the bonds of glucose molecules, which are synthesized during photosynthesis.
4. Recall the general equation of photosynthesis: \$6\,CO_2 + 6\,H_2O + \text{light energy} \rightarrow C_6H_{12}O_6 + 6\,O_2$, showing the transformation of light energy into chemical energy.
5. Conclude that the primary energy transformation in plant cells during photosynthesis is the conversion of light (radiant) energy into chemical energy stored in glucose.