One year's growth in length of a young woody shoot is the distance between successive
Rings of bud scale scars
Leaf scars
Branches
Axillary buds
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.
Give explanation about cork cambium.
Give differences : Heartwood and Sapwood