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Transportation Systems in Animals Transportation Systems in Animals During the Program 1. Planet Earth is home to at least how many species of animals? 2. Complete the following sentence: We all rely on our environment for , .Nutrients and other and other need to be around the body. 3. How do small animals, like flatworms, obtain the oxygen and other substances they need from their environment? 4. Why do larger animals, like dogs, not utilise diffusion for exchange with their environment? 5. Complete the following sentences: a) A transport system is designed to: Take in , them to the body, and then the waste. b) Most animals have a circulatory system, which is an organ system responsible for circulating n , w and d . . . . 6. What are the two types of circulatory system? 7. Which transport system is responsible for fluid balance between blood vessels and tissues? 8. Which transport system is responsible for removing wastes from the body and balancing salts in the blood? Transportation Systems in Animals 9. What are the four transport systems found in large, complex animals? 10. How is fluid carried around the circulatory system? 11. In what types of animals would we find open circulatory systems? 12. What are the two main gases exchanged between the blood and the air within the lungs? 13. What conditions are needed for effective gas exchange with the environment? 14. What are the main organs of the excretory system, responsible for filtering the blood?