The vascular cambium normally gives rise to

$A$ $100$-year-old tree which shows well-marked annual rings in its trunk will have:

$A$. Heartwood is durable,dark,and central in position.
$B$. Tyloses are balloon-like structures of xylem parenchyma in vessel lumen.
$C$. Late wood is formed during spring season.

Annual rings are well-developed in trees of which of the following regions?

Define the following terms:
$(i)$ Early wood
$(ii)$ Late wood

Which of the following is not a part of the periderm?