Segmentation is the repetitive division of an animal’s body into body plans. In an ant, there exist three main segments: the thorax, the abdomen, and the head. This group of segments is called tagmata, as seen with this ant. A tagma is the grouping of specialized segments into one functioning unit, in this case, referring to the morphology and composition of the phylum Arthropoda. Dragonflies belong to the Kingdom Animalia, the Phylum Arthropoda, and the Order Odonata. Pictured above is a baby dragonfly known as a nymph. They have three pairs of legs and two pairs of wings. Dragonflies also undergo incomplete metamorphosis.