Provide definitions/explanations for the following terms:
$(i)$ Leaf
$(ii)$ Root

(N/A) $(i)$ The leaf is a lateral,generally flattened structure borne on the stem. It develops at the node and bears a bud in its axil.
$(ii)$ The root is the underground part of the plant that typically grows towards gravity (geotropism),soil,and water (hydrotropism),and away from sunlight and air.