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Cactus A cactus (plural: cacti) is any member of the plant family Cadaceae native to the Americas. They are often used as ornamental plants, but some are also crop plants. Cacti are grown for protection of property from wild animals, as well as many other uses. Cacti are part of the plant order Caryophyllales, which also include members like beets, gypsophila, spinach, amaranth, tumbleweeds, carnations, rhubarb, buckwheat, plumbago, bougainvillea; chickweed and knotgrass. Cacti are unusual and distinctive plants, which are adapted to extremely arid and hot environments, showing a wide range of anatomical and physiologlcal features which conserve water. Their stems have adapted to become photosynthetic and fleshy, while the leaves have become the spines for which cacti are well known. Cacti come in a wide range of shapes and sizes. The tallest is Pachycereus pringlei, with a maximum recorded height of 19.2 m, and the smallest is Blossfeldia liliputiana, only about 1 cm in diameter at maturity. Cactus flowers are large, and like the spines and branches, arise from areoles. Many cactus species are night blooming, as they are pollinated by nocturnal insects or small animals, mainly moths and bats. Cacti range in size from small and globular to tall and columnar. 8. What is the purpose of the text? A. To give information about American cacti B. To explain the physical features of cacti C. To describe cacti in general D. To tell about cacti's life

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