Growth rings are well marked in trees growing in

The anatomy of springwood shows some peculiar features. Identify the correct set of statements about springwood.

$(a)$ It is also called as the earlywood

$(b)$ In spring season cambium produces xylem elements with narrow vessels

$(c)$ It is lighter in colour

$(d)$ The springwood along with autumnwood shows alternate concentric rings forming annual rings

$(e)$ It has lower density

Choose the correct answer from the options given below:

Vascular bundle with cambium is called

In a stem which is covered by periderm and in which stomata are absent, gaseous exchange takes place through

Vascular cambium is responsible for cutting off..