MCQ
All xylem elements when mature are dead except
- ATracheids
- BVessels
- ✓Xylem parenchyma
- DXylem fibres
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$I.$ limited space and nutrient
$II.$ accumulation of toxic agent
$III.$ unlimited space and nutrient
$IV.$ accumulation of nutrient agent
Choose the correct combination of options
$(a)$ 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: