Corals are not plants.

Lotus, Chinese rose, tomato tree and coral belong to plants, which is wrong.

Coral is a kind of marine cylindrical coelenterate, which is automatically fixed on the calcareous remains of ancestral corals in the white larval stage. Coral is the shell secreted by coral. The chemical composition of coral is mainly CaCO3, which exists in the form of microcrystalline calcite aggregate. There is also a certain amount of organic matter in the composition, which is mostly dendritic and vertical. Each individual coral has concentric circles and radial stripes on the cross section, and its color is often white, but there are also a little blue and black. Corals are not just like branches.