The solar energy is converted into ATP inA.MitochondriaB.ChloroplastC.RibosomeD.Peroxisome

The correct answer is B. Chloroplast.
Chloroplasts are the organelles in plant cells responsible for photosynthesis, a process in which solar energy is converted into chemical energy stored in the form of ATP (adenosine triphosphate) and NADPH. These molecules are used in the Calvin cycle to synthesize glucose from carbon dioxide and water.
Key Points about Chloroplasts:
1. Photosynthesis Process:
o During photosynthesis, light energy is captured by chlorophyll in the chloroplasts.
o This light energy is used to split water molecules (photolysis), releasing oxygen and generating high-energy molecules (ATP and NADPH).
2. ATP Production: The ATP produced in the light reactions of photosynthesis is used to fuel the synthesis of sugars during the Calvin cycle, which occurs in the stroma of the chloroplast.
3. Structure: Chloroplasts contain structures called thylakoids, which are where the light reactions take place, and the stroma, which is the site for the Calvin cycle.
Why Not the Other Options?
• A. Mitochondria: Mitochondria are responsible for cellular respiration, where ATP is produced by breaking down glucose, not converting solar energy. They do not play a direct role in converting solar energy.
• C. Ribosome: Ribosomes are involved in protein synthesis but do not produce ATP or convert solar energy.
• D. Peroxisome: Peroxisomes are organelles involved in the breakdown of fatty acids and detoxification but do not play a role in converting solar energy into ATP.
Chloroplasts are the organelles where solar energy is converted into ATP through the process of photosynthesis, making B. Chloroplast the correct answer.