The diagram shows a cross-section of a leaf. What structures are P, Q, R and S?
- AP chloroplast; Q phloem; R palisade tissue; S xylem
- BP cuticle; Q xylem; R chloroplast; S stoma
- CP phloem; Q palisade tissue; R cuticle; S stoma
- DP xylem; Q chloroplast; R phloem; S cuticle