In the given transverse section of stem showing periderm , identify the parts labelled P,Q,R S and select the correct option
P. Complementary cells
Q. Cork
R. Phellogen
S. Phelloderm
P. Lenticles
Q. Cork
R. Phelloederm
S. Phellogen
P. Lenticels
Q. Phelloderm
R. Phellogen
S. cork
P. Complementary cells
Q. phelloderm
R. Phellogen
S. cork
P: Complementray cells
Q: Cork
R: Phellogen
S: Phelloderm