NMMS VLASS 7 GS RESPIRATION IN ORGANISMS 2

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NMMS VLASS 7 GS RESPIRATION IN ORGANISMS 2 👇



1. Which part of the human body expands and contracts during breathing?

  • Lungs
  • Heart
  • Liver
  • Kidneys

2. Which part separates the chest cavity from the abdomen?

  • Lungs
  • Ribs
  • Diaphragm
  • Heart

3. What is the main function of alveoli?

  • Exchange of gases
  • Filtering air
  • Pumping blood
  • Breaking down food

4. During inhalation, the diaphragm moves

  • Downward
  • Upward
  • Sideways
  • Outward

5. During exhalation, the diaphragm moves

  • Downward
  • Upward
  • Inward
  • Flat

6. What happens to the chest cavity during inhalation?

  • Contracts
  • It expands
  • Becomes rigid
  • Remains same

7. Which part of the respiratory system is lined with cilia?

  • Alveoli
  • Diaphragm
  • Trachea
  • Bronchioles

8. Which organism breathes through tiny pores called spiracles?

  • Frog
  • Fish
  • Insect
  • Snail

9. Which of the following organisms uses gills to breathe?

  • Fish
  • Earthworm
  • Snake
  • Bird

10. How does oxygen enter the blood in humans?

  • By diffusion
  • By osmosis
  • By pressure
  • By absorption

11. Which process occurs both in plants and animals?

  • Photosynthesis
  • Reproduction
  • Respiration
  • Transpiration

12. What is the ultimate source of energy for respiration?

  • Sunlight
  • Air
  • Food
  • Water

13. Which part of the plant takes in oxygen from the soil air?

  • Roots
  • Stem
  • Leaves
  • Flowers

14. Through which openings does a leaf exchange gases?

  • Lenticels
  • Stomata
  • Vacuoles
  • Vessels

15. Which of these animals breathes through its moist skin?

  • Frog
  • Snake
  • Bird
  • Cat

16. What does the term “breathing rate” refer to?

  • Depth of breathing
  • Number of breaths per minute
  • Amount of air in lungs
  • Amount of oxygen in blood

17. In which of these does respiration occur without oxygen?

  • Fish
  • Human
  • Yeast
  • Plant

18. What are the small openings on the stems of woody plants called?

  • Lenticels
  • Stomata
  • Pores
  • Spiracles

19. What is released when glucose is broken down in cells?

  • Energy
  • Water
  • Starch
  • Chlorophyll

20. In which part of the body does cellular respiration occur?

  • Mitochondria
  • Lungs
  • Heart
  • Stomach

21. The air sacs of lungs are surrounded by

  • Bronchi
  • Capillaries
  • Ribs
  • Trachea

22. In human respiration, air passes from the trachea into

  • Alveoli
  • Bronchi
  • Diaphragm
  • Lungs

23. What helps in the rhythmic movement of air during breathing?

  • Diaphragm only
  • Heart muscles
  • Diaphragm and ribs
  • Abdominal muscles

24. During heavy exercise, which acid forms in human muscles?

  • Citric acid
  • Formic acid
  • Lactic acid
  • Sulphuric acid

25. Which gas diffuses into blood from alveoli?

  • Carbon dioxide
  • Nitrogen
  • Hydrogen
  • Oxygen

26. Which gas diffuses out of blood into alveoli?

  • Oxygen
  • Carbon dioxide
  • Hydrogen
  • Nitrogen

27. Why do mountain climbers carry oxygen cylinders?

  • More pollution at height
  • More oxygen needed for warmth
  • Less oxygen at high altitude
  • To breathe carbon dioxide

28. Which process in yeast is used for making bread and wine?

  • Fermentation
  • Digestion
  • Transpiration
  • Condensation

29. Which structure prevents food from entering the windpipe?

  • Epiglottis
  • Tongue
  • Vocal cords
  • Larynx

30. What helps the lungs to remain spongy?

  • Blood in vessels
  • Air in alveoli
  • Mucus lining
  • Cilia movement

31. Which gas do plants release only during respiration?

  • Oxygen
  • Carbon dioxide
  • Nitrogen
  • Hydrogen

32. How do aquatic animals like fish get oxygen?

  • From air bubbles
  • From dissolved oxygen in water
  • From their stomach
  • From sunlight

33. Which body part acts as the windpipe?

  • Nostrils
  • Trachea
  • Lungs
  • Bronchioles

34. What helps air to move in and out of the lungs?

  • Heart pumping
  • Diaphragm movement
  • Blood pressure
  • Muscle contraction

35. How does respiration differ from photosynthesis in plants?

  • Photosynthesis releases energy
  • Respiration releases energy
  • Both consume CO₂
  • Both need light

36. In which process is glucose completely broken down with oxygen?

  • Anaerobic respiration
  • Fermentation
  • Aerobic respiration
  • Photosynthesis

37. What happens if carbon dioxide is not removed from the body?

  • It becomes poisonous
  • It helps in digestion
  • It increases oxygen
  • It cools the lungs

38. What causes the movement of air during breathing?

  • Temperature change
  • Pressure difference
  • Gravity
  • Muscle weight

39. Which of the following is an example of aerobic respiration?

  • Yeast fermentation
  • Human breathing
  • Muscle fatigue
  • Cactus respiration

40. What happens during exhalation?

  • Oxygen enters
  • Carbon dioxide goes out
  • Lungs fill with air
  • Chest expands

41. Which type of respiration occurs in mitochondria?

  • Anaerobic
  • Fermentation
  • Aerobic
  • Diffusion

42. In anaerobic respiration, energy is released

  • Equal to aerobic
  • More than aerobic
  • Less than aerobic
  • Very high

43. Which gas is required by all living organisms for survival?

  • Carbon dioxide
  • Oxygen
  • Nitrogen
  • Methane

44. What is the main waste gas in respiration?

  • Carbon dioxide
  • Hydrogen
  • Oxygen
  • Nitrogen

45. Which organ has the smallest air sacs for gas exchange?

  • Kidneys
  • Heart
  • Lungs
  • Liver

46. Which process is common to both plants and animals?

  • Photosynthesis
  • Transpiration
  • Circulation
  • Respiration

47. What is produced during respiration besides energy?

  • Proteins and fats
  • Carbon dioxide and water
  • Sugars and vitamins
  • Starch and cellulose

48. Why do amphibians like frogs need moist skin?

  • For storing water
  • For digestion
  • For gaseous exchange
  • For floating

49. Which organ supplies oxygenated blood to all parts of the body?

  • Liver
  • Lungs
  • Brain
  • Heart

50. What is the main function of the respiratory system?

  • To transport food
  • To digest proteins
  • To supply oxygen and remove carbon dioxide
  • To store energy
Location: Mogalturu, Andhra Pradesh 534281, India

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