(A) heart wood 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.

The wood formed during spring season is called :

The wood formed during spring season is called :

The wood formed during spring season is called :

The balloon like outgrowth formed by xylem parenchyma into vessels are called as

Balloon-like swellings formed by xylem parenchyma inside the xylem vessels through pits are

Balloon-like swellings formed by xylem parenchyma inside the xylem vessels through pits are

Activity of cambium is different in two seasons and xylem vessels formed have narrow and widal lumens. Give the type of wood formed during the different seasons.

In temperate regions, during spring season, cambium is very active and produces a large number of xylary elements having vessel with wider cavities wood formed in this way is called as

In temperate regions, during spring season, cambium is very active and produces a large number of xylary elements having vessel with wider cavities wood formed in this way is called as