CBSE Class 5 Science Organ Systems Assignment

Fill in the blanks:-

1. The _____________ is a J-shaped organ.

2. ____________ is the longest and heaviest internal organ.

3. The ______produces bile which is stored in the ___________

4. The _____is a thick bundle of nerves that runs down the spine.

5. The nervous system consists of ____,_____ and__________

6. ___ helps to break down the food into ______________ and

7. The _______stores the nutrients from the food and also changes food from one form to another.

8. The pumping action of the heart is called __________

9. The ______________ is the centre of the nervous system.

10. The____________ filter the blood.

11. The lungs throw out _______________while the skin removes _________________ as waste.

12. All the bones of the body are together known as the _________________________

13. The ____________ protects the brain.

14. The ____________ protects the spinal cord.

15. ______________ are like elastic threads that join bones with one another.

16. _________________ and _____________ of our muscles make our bones move.

17. Our heart beats _____________ times a minute.

18. The digested food is absorbed by the walls of the ___________________

19. Number of bones in human body____________

20. Number of muscles in our body ___________

21. The smallest bone in our body is in our_______________

22. A ___________________ is used to hear the heart beat.

23. A group of organs which work together to perform a function are called ______________.

24. The food from the mouth goes into the ________________.

25. The small intestine is about _______ feet in length.

26. ___________ is the largest organ in the body.

27. Air entering our body is filtered by ____________ in the nose.

28. There are _________ bones in our body.

29. The undigested food is passed into ______________.

30. Respiratory System consists of _______________, ___________ and ________________.

31. Wind pipe is also known as ________________.

32. The food gives us __________________ to work or play.

33. The pumping action of the heart is called a _____________.

34. ______________ and _____________ are the two types of blood vessels.

35. Brain is protected by a hard, bony structure called _________________.

36. Our heart beats _____________ times a minute.

37. The main organs of the excretory system are _________________.

38. The skin removes waste as _______________.

39. All the bones or our body are together known as ________________.

40. _________________ helps the bones to move.

41. The bones meet each other and these meeting points are called _____________.

42. ______________ is the centre of nervous system.

43. Calamities caused by nature are called _________________________.

44. The origin point of an earthquake is called as ________________.

45. ____________________ is the major cause of landslides in hilly areas.

46. A natural calamity affects the _______________ of a country.