1. Fish is an example of

2. How many types of circulatory system

3. Oxygenated blood is present in

4. Pulmonary means circulations in

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

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

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

8. Circulatory system transports through which thing

9. in close circulatory system blood is enclosed with in

10. Which one is example of open circulatory system

11. Circulatory system transports through which thing

12. The heart consists of

13. Which type of circulation in vertebrates

14. Types of closes circulatory system

15. Blood enters into right atrium through

16. How respiratory system takes place in fish

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

18. In animals transport of gases nutrients is called

19. systemic means circulation in

20. In Fishes' heart ventricle pumps blood into