BOTANY

Detailed explanation-1: -In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

Detailed explanation-2: -Chloroplasts are green because they contain the pigment chlorophyll, which is vital for photosynthesis.

Detailed explanation-3: -It is mainly found in mesophyll cells and guard cells of leaves. Chloroplasts are minute oval bodies bounded by a double membrane. Interior of chloroplast contains closely packed flattened sacs called thylakoid organised in grana. The thylakoid membrane contains the pigment chlorophyll.