Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

The stem may be by epidermis
(having stomata, and
photosynthetic cells) as monocotsor,
alternatively, the epidermis
substituted by the periderm
(, phellogen and cork) as
dicotsand gymnosperms.

The leaves covered by epidermis.