Given the question: Ziziphus -  Ziziphus /ˈzɪzɨfəs/ is a genus of about 40 species of spiny shrubs and small trees in the buckthorn family Rhamnaceae distributed in the warm-temperate and subtropical regions throughout the world. The leaves are alternate entire with three prominent basal veins and 2–7 cm (0.79–2.76 in) long; some species are deciduous others evergreen. The flowers are small inconspicuous yellow-green. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
The answer is:
Plant