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- Figure 27.9 Which of the following statements about diploblasts and triploblasts is false? Animals that display radial symmetry are diploblasts. Animals that display bilateral symmetry are triploblasts. The endoderm gives rise to the lining of the digestive tract and the respiratory tract. The mesoderm gives rise to the central nervous system.Frogs belong to which order? Anura Urodela Caudata ApodaFigure 28.21 Which of the following statements about the anatomy of a mollusk is false? Mollusks have a radula for grinding food. A digestive gland is connected to the stomach. The tissue beneath the shell is called the mantle. The digestive system includes a gizzard, a stomach, a digestive gland, and the intestine.
- Monotremes include: kangaroos koalas bandicoots platypuses.Squamata includes. crocodiles and alligators turtles tuataras lizards and snakesFigure 29.3 Which of the following statements about common features of chordates is true? The dorsal hollow nerve cord is part of the chordate central nervous system. In vertebrate fishes, the pharyngeal slits become the gills. Humans are not chordates because humans do not have a tail. Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column.
- Squamata includes _____. a. crocodiles and alligators b. turtles c. tuataras d. lizards and snakesFigure 28.45 Which of the following statements about insects is false? Insects have both dorsal and ventral blood vessels. Insects have spiracles, openings that allow air to enter. The trachea is part of the digestive system. Insects have a developed digestive system with a mouth, crop, and intestine.Label the axis vertebrae of a frog