1. Circulatory system transports through which thing

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

3. Blood enters into right atrium through

4. Which type of circulation in vertebrates

5. in close circulatory system blood is enclosed with in

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

7. How many types of circulatory system

8. Which one is example of open circulatory system

9. In animals transport of gases nutrients is called

10. How respiratory system takes place in fish

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

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

13. The heart consists of

14. Fish is an example of

15. systemic means circulation in

16. In Fishes' heart ventricle pumps blood into

17. Types of closes circulatory system

18. Circulatory system transports through which thing

19. Oxygenated blood is present in

20. Pulmonary means circulations in