Which nutrient class supplies glucose as the main source of energy for the body?

The carbohydrates supply the glucose to the body as the main source of energy.

The  carbohydrates are the most abundant bio-molecules and are also known as the saccharides. Approximately four kilocalories are contained by just 1 gram of carbohydrates. They are essential for the proper growth and functioning of the body.

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation