Commercial cork is obtained from
Berberis/Barberry
Salix/Willow
Quercus/Oak
Betula/Birch
As the secondary growth takes place (proceeds) in a tree, thickness of
heartwood increases
sapwood increases
both increase
both remain the same
Cork is formed from
cork cambium (phellogen)
vascular cambium
phloem
xylem
Organization of stem apex into corpus and tunica is determined mainly by
planes of cell division
regions of meristematic activity
rate of cell growth
rate of shoot tip growth
Which of the following meristems is responsible for extrastelar secondary growth in dicotyledonous stem ?
Intrafascicular cambium
Interfascicular cambium
Intercalary mertistem
Phellogen
