A cactus belongs to kingdom ____ because it can produce its own food and is multicellular.
plantae
There are different types of plant species, which are found on planet earth. They are sorted and classified into a separate kingdom known as kingdom Plantae. This classification is based on their similarities and differences.
The kingdom Plantae is also called as kingdom Metaphyta. The kingdom Plantae includes all types of eukaryotic, multicellular, photosynthetic plants found in this biosphere. The cactus belongs to the kingdom Plantae.