1. Oxygenated blood is present in

2. Pulmonary means circulations in

3. Circulation of blood takes place in unicellular organisms through the

4. The largest artery which supplies blood towards the body is called

5. Movement of substances from higher concentration to lower is called

6. Which one is example of open circulatory system

7. How respiratory system takes place in fish

8. in close circulatory system blood is enclosed with in

9. Types of closes circulatory system

10. Circulatory system transports through which thing

11. Which type of circulation in vertebrates

12. Circulatory system transports through which thing

13. The heart consists of

14. Close circulatory system is More efficient and complicated as compare of

15. In animals transport of gases nutrients is called

16. Fish is an example of

17. systemic means circulation in

18. In Fishes' heart ventricle pumps blood into

19. Blood enters into right atrium through

20. How many types of circulatory system