DENDROLOGY

Detailed explanation-1: -The correct option is A True. Whorl ed arrangement: If more than two leaves arise from a single node and they are present surrounding the node in a circular manner, it is called a whorled arrangement. Multiple leaves originate from the same node resulting in the formation of a whorl with leaves at the same level.

Detailed explanation-2: -Spiral phyllotaxy has a single leaf on each node. The term phyllotaxy was coined by Charles Bonnet to describe the arrangement of leaves on a plant.

Detailed explanation-3: -The whorl type phyllotaxy is when more than three leaves develop at the nodes and form a whorl of leaves. The examples of plants of whorl type phyllotaxy will be sunflower, tulsi, sergula, alstonia etc.