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

(N/A) $(i)$ Early wood: During the spring season,the cambium is highly active and produces a large number of xylary elements with vessels having wider cavities. This wood is known as spring wood or early wood.
$(ii)$ Late wood: During the winter season,the cambium is less active and forms fewer xylary elements with narrow vessels. This wood is called late wood or autumn wood.