Mature wood stem has a peripheral water proof tissue with opening in the form of scars on its surface. They are
Epidermal cells
Guard cells
Lenticels
Stomata
The cells without nuclei are present in
What is present on the surface of the leaves which helps the plant prevent loss of water but is absent in roots?
What is stomatal apparatus? Explain the structure of stomata with a labelled diagram.
The outermost primary meristem gives rise to