NMMS CLASS 7 GS Respiration in Organisms 1

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NMMS CLASS 7 GS Respiration in Organisms 1 👇


1. Which gas is used by organisms during respiration?

  • Oxygen
  • Carbon dioxide
  • Helium
  • Nitrogen

2. Which gas is released during respiration?

  • Hydrogen
  • Carbon dioxide
  • Nitrogen
  • Oxygen

3. What is the process of breaking down food to release energy called?

  • Digestion
  • Photosynthesis
  • Respiration
  • Circulation

4. In which cell organelle does cellular respiration occur?

  • Nucleus
  • Mitochondria
  • Ribosome
  • Chloroplast

5. What is the raw material for respiration?

  • Protein
  • Fat
  • Glucose
  • Vitamin

6. Which of the following organisms respires through skin?

  • Fish
  • Cat
  • Bird
  • Earthworm

7. What are the openings on the sides of insects called?

  • Stomata
  • Gills
  • Spiracles
  • Lenticels

8. Which of these uses lungs for breathing?

  • Frog tadpole
  • Fish
  • Earthworm
  • Human

9. Which gas do plants give out during respiration?

  • Oxygen
  • Hydrogen
  • Carbon dioxide
  • Nitrogen

10. Which process produces energy in living organisms?

  • Photosynthesis
  • Excretion
  • Respiration
  • Transpiration

11. The energy released during respiration is stored in which molecule?

  • ATP
  • DNA
  • Enzyme
  • RNA

12. Which type of respiration occurs without oxygen?

  • Aerobic respiration
  • Excretion
  • Anaerobic respiration
  • Photosynthesis

13. In aerobic respiration, which gas is necessary?

  • Oxygen
  • Hydrogen
  • Carbon dioxide
  • Nitrogen

14. Which organ helps fish in breathing?

  • Lungs
  • Skin
  • Gills
  • Trachea

15. Which of the following has book lungs for respiration?

  • Fish
  • Earthworm
  • Spider
  • Frog

16. Which of these uses both lungs and skin for respiration?

  • Bird
  • Snake
  • Cat
  • Frog

17. What is the by-product of anaerobic respiration in muscles?

  • Carbon monoxide
  • Hydrogen
  • Lactic acid
  • Alcohol

18. What are tiny air sacs in human lungs called?

  • Bronchi
  • Alveoli
  • Trachea
  • Bronchioles

19. Which part of the body connects nose to lungs?

  • Food pipe
  • Trachea
  • Diaphragm
  • Bronchiole

20. In plants, exchange of gases occurs mainly through

  • Roots
  • Seeds
  • Stomata
  • Flowers

21. What is breathing rate?

  • Amount of air per breath
  • Number of breaths per minute
  • Amount of oxygen inhaled
  • Heartbeats per minute

22. What causes the movement of air in and out of the lungs?

  • Heart
  • Liver
  • Diaphragm
  • Ribs

23. Which of the following organisms can survive without oxygen?

  • Human
  • Fish
  • Bird
  • Yeast

24. Which of these is a waste product of respiration?

  • Protein
  • Carbon dioxide
  • Chlorophyll
  • Starch

25. What is the main difference between breathing and respiration?

  • Both are same
  • Breathing is physical, respiration is chemical
  • Both are chemical
  • Both are physical

26. What is produced when yeast respires without oxygen?

  • Water
  • Protein
  • Alcohol
  • Glucose

27. During heavy exercise, which acid accumulates in muscles?

  • Formic acid
  • Citric acid
  • Lactic acid
  • Acetic acid

28. What type of respiration occurs in yeast?

  • Anaerobic
  • Aerobic
  • Chemical
  • Mixed

29. Which structure controls the opening and closing of stomata?

  • Root hairs
  • Guard cells
  • Stem cells
  • Leaf veins

30. What helps fish to get oxygen from water?

  • Skin
  • Fins
  • Gills
  • Lungs

31. Which animal breathes through moist skin?

  • Bird
  • Snake
  • Earthworm
  • Cat

32. Which part of the body is called the windpipe?

  • Nostrils
  • Trachea
  • Bronchi
  • Oesophagus

33. Which organ separates the chest cavity from the abdomen?

  • Heart
  • Liver
  • Stomach
  • Diaphragm

34. In plants, exchange of gases also takes place through

  • Seeds
  • Fruit skin
  • Lenticels
  • Flowers

35. What happens when diaphragm contracts?

  • Air enters lungs
  • Air goes out
  • Lungs collapse
  • Breathing stops

36. What happens when diaphragm relaxes?

  • Air goes out
  • Air enters lungs
  • Nostrils close
  • Breathing stops

37. Which part of the respiratory system branches into smaller tubes inside lungs?

  • Alveoli
  • Diaphragm
  • Bronchi
  • Trachea

38. What do animals need to break down food for energy?

  • Nitrogen
  • Water
  • Carbon dioxide
  • Oxygen

39. What is the process of respiration in cells called?

  • Fermentation
  • Cellular respiration
  • Photosynthesis
  • Combustion

40. In human beings, air enters through

  • Mouth
  • Eyes
  • Nostrils
  • Ears

41. Which of these is the correct path of air in the respiratory system?

  • Lungs → Nose → Trachea → Bronchi
  • Nostrils → Trachea → Bronchi → Lungs
  • Bronchi → Nose → Trachea → Lungs
  • Trachea → Nose → Bronchi → Lungs

42. In anaerobic respiration, which gas is not used?

  • Helium
  • Oxygen
  • Carbon dioxide
  • Nitrogen

43. Which of these is an example of anaerobic respiration?

  • Fermentation
  • Photosynthesis
  • Transpiration
  • Digestion

44. What happens to energy during respiration?

  • It is stored in lungs
  • It disappears
  • It is released for body activities
  • It turns into carbon dioxide

45. The energy released during respiration is stored in

  • Vitamins
  • ATP
  • Glucose
  • Water

46. Which organ helps frogs breathe on land?

  • Gills
  • Lungs
  • Skin only
  • Mouth

47. What is the function of nose hairs in respiration?

  • Create heat
  • Filter dust
  • Store air
  • Produce mucus

48. Which part of the respiratory system carries air into lungs?

  • Diaphragm
  • Alveoli
  • Bronchi
  • Liver

49. Which gas diffuses out of blood during respiration?

  • Oxygen
  • Carbon dioxide
  • Nitrogen
  • Hydrogen

50. Which is the first step of respiration?

  • Movement of diaphragm
  • Air entering nostrils
  • Carbon dioxide removal
  • Breakdown of glucose
Location: Mogalturu, Andhra Pradesh 534281, India

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