Science Questions Series || Class 7 || Chapter - Respiration In Organisms

 Dear Readers, 

The given below worksheet is from chapter Respiration in organisms. It is for class 7 and subject is Science. You will find this chapter in class 7 NCERT book.

1. The stored energy of food is released slowly during the process of __________ which takes place inside our body all the time.
2. The process of respiration is the reverse of __________.
3. The process of respiration which releases energy from food takes place inside the cells of the body, it is also called __________.
4. There are two types of respiration: __________ and __________.
5. The microscopic organism like __________ obtain energy by anaerobic respiration.
6. Those organisms which obtain energy by the process of anaerobic respiration are called ________.
7. Yeast is a ________ organism.
8. All the living organisms need to ________ to get energy from food required for their survival.
9. The process of respiration involves taking oxygen into the cells, use it for releasing ________ by burning food, and then elimination of the waste products from the body.
10. ________ is a kind of slow burning of the food at ordinary temperature to produce energy.
11. When the broken down of the glucose food occurs with the use of oxygen, it is called ________.
12. Most of the ________ organisms carry out aerobic respiration.
13. All the organisms which obtain energy by aerobic respiration cannot live without the ________.
14. Yeast converts glucose into ________.
15. After the heavy physical exercise we must get muscle ________.
16. The accumulation of ________acid in the muscles causes muscle cramps.
17. ________ is the process by which air rich in oxygen is taken inside the body of an organism and air rich in carbon dioxide is expelled from the body.
18. Process of taking in air is called ________ and the process of giving out the air is called________.
19. The number of times a person breathes in one minute is called ________.
20. The average breathing rate in an adult human being at the rest of ________ times per minute.
21. The process of breathing takes place in our ________.
22. During heavy exercise the breathing rate of adult human being can increase upto ________per minute.
23. Breathing involves the movement of the ________ and the ________ .
24. Children breathe about ________ times per minute.
25. The only difference in the exhaled air  and inhaled air is that they contain different proportion of ________, ________, and________.
26. If we exhale air on a mirror through our mouth, then a patch of ________ is formed on the mirror surface.
27. The exchange of gases between the air and blood takes place across the walls of the ________.
28. The breathing organism of the ________ are lungs.
29. The ________carry oxygen to all parts of the body.
30. The oxygen is carried by a red pigment called ________ present in the red blood cell.
31. An athlete breathes ________ and ________ than usual even after finishing the race.
32. When we inhale air, it passes through our nostrils into the ________.
33. ________ are present in chest cavity.
34. The skin of ________ feels moist and slimy on touching.
35. ________ are projections of the fish’s skin.
36. We often ________ when we inhale air containing dust, smoke and pollen, etc.
37. ________ is caused by insufficient oxygen in our body.
38. The biggest enemy of our lungs is the habit of ________.
39. ________ are the animals which can breathe through their lungs as well as its moist skin.
40. The exchange of air in the leaves during the respiration takes place through ________

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