OBJECTIVE FORESTRY

Detailed explanation-1: -Sinus: The portion of a leaf margin that dips in between two lobes or crenations.* The alternating sinuses and lobes around the margins of maple leaves give them their distinctive shape.

Detailed explanation-2: -Definition. The space or recess between two lobes of a leaf, petal, or other expanded organ.

Detailed explanation-3: -Shade leaves differ morphologically by being larger, less deeply lobed (if the species has lobed leaves), and thinner, and can have a deeper green coloring and a different texture than sun leaves on the same plant.