Question: Answer the following question given this paragraph:   repeating bony units that make up the vertebral column of vertebrates.   Q: What do vertebrates possess that is made up of repeating bony units?   A:
Answer: vertebral column

Question: Answer the following question given this paragraph:   Arteries are muscular blood vessels that carry blood away from the heart. They have thick walls that can withstand the pressure of blood being pumped by the heart. Arteries generally carry oxygen-rich blood. The largest artery is the aorta, which receives blood directly from the heart.   Q: What type of blood vessels carry blood away from the heart?   A:
Answer: arteries

Question: Answer the following question given this paragraph:   Cnidarians have an incomplete digestive system with a single opening. The opening is surrounded by tentacles, which are covered with nematocyst cells and used to capture prey. Digestion takes place in the digestive cavity. Nutrients are absorbed and gases are exchanged through the cells lining this cavity. Fluid in the cavity supports and stiffens the cnidarian body.   Q: What organism is characterized by an incomplete digestive system and a single, tentacled opening?   A:
Answer:
cnidarians