Periderm includes
Phellem, phelloderm, plerome
Phellem, phellogen, dermatogen
Phellem, phellogen, phelloderm
Phellem, phellogen, cortex
Periderm includes-phellem, phellogen and phelloderm.
The cork is impervious to water due to
In a stem which is covered by periderm and in which stomata are absent, gaseous exchange takes place through
What is/are true about heartwood?
$I.$ It does not help in water conduction.
$II.$ It is also called alburnum.
$III.$ It is dark in colour but very soft.
$IV.$ It has tracheary elements, which are filled with tannin, resin, etc.
Secondary growth or increase in diameter is due to
Conduction of sap in plants occurs through
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