表皮
anatomy
biological
biology
botany
cell
cell wall
cells
chlorophyll
chloroplasts
cuticle
drawing
endoplasmic reticulum
energy
eukaryotic
golgi apparatus
graphic
green
guard
illustration
label
leaf
leaves
mesophyll
microscopic
mitochondria
nucleus
palisade
phloem
photosynthesis
plant
powerhouse
process
respiration
science
scientific
spongy
stoma
stomata
structure
technical
vacuole
vein
xyelm