The diagram depicts a palisade mesophyll cell from a green leaf. In which labelled part does photosynthesis take place and where is starch kept?
- Aphotosynthesis occurs: X; starch is stored: W
- Bphotosynthesis occurs: X; starch is stored: Z
- Cphotosynthesis occurs: Y; starch is stored: X
- Dphotosynthesis occurs: Y; starch is stored: Y