LIFE SCIENCE

Detailed explanation-1: -Chloroplasts are found in plant cells only because chloroplasts contain chlorophyll which is essential for photosynthesis. Chlorophyll traps sunlight and uses it to prepare food for plants by the process of photosynthesis.

Detailed explanation-2: -Chloroplasts contain green pigment called chlorophyll which helps in manufacture of food through the process of photosynthesis. Since, animals do not manufacture food so they do not need chloroplast. And hence, chloroplast is found only in plant cell.

Detailed explanation-3: -The two structures found in plant cells that are absent in animal cells are cell wall and chloroplast.

Detailed explanation-4: -Plastids are present only in plant cells. These are chloroplasts, chromoplasts and leucoplasts. They help in pigmentation of the cells.