The wood of $Quercus$ is ...... .

An annual ring consists of .........

In roots and stems,secondary growth takes place after the formation of

Annual rings are distinct in plants 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:

The balloon-shaped structures called $tyloses$: