Q.9 Explain why chloroplast are found only in plant cells?

Chloroplasts are organelles that conduct photosynthesis, where the photosynthetic pigment chlorophyll captures the energy from sunlight and converts it and stores it in the energy-storage molecules ATP and NADPH.

Chloroplasts are found only in plant cells because chloroplasts contain chlorophyll which traps sunlight and uses it to prepare food for plants by the process of photosynthesis, while animal cells doesn't require chloroplast because they are heterotrophic organisms and thus they depend on other organisms for their food. As they don't prepare their own food hence they don't need sunlight as a result, they don't need chlorophyll and chloroplast in their cell.