Practice the AP 7th Class Science Bits with Answers Chapter 4 Respiration and Circulation on a regular basis so that you can attempt exams with utmost confidence.

AP 7th Class Science Bits Chapter 4 Respiration and Circulation with Answers

I. Multiple Choice Questions

1. In which process accumulated semisolid wastes come out?
A) Sneezing
B) Yawning
C) Coughing
D) Apnea
Answer:
C) Coughing

2. Which of the following is occured when food enters in the wind pipe?
A) Sneezing
B) Yawning
C) Coughing
D) Apnea
Answer:
D) Apnea

3. First aid for bleeding is
A) Create pressure on the diaphragm
B) Cover with bandage
C) Upside down
D) Above all
Answer:
B) Cover with bandage

4. Which of the following requires oxygen?
A) Aerobic respiration
B) Anaerobic respiration
C) Both A & B
D) None
Answer:
A) Aerobic respiration

5. The process of inhaling air is called
A) Breathing
B) Inspiration
C) Expiration
D) Respiration
Answer:
B) Inspiration

6. The opening of the nose is called
A) Nostrils
B) Nasal cavity
C) Pharynx
D) wind pipe
Answer:
A) Nostrils

7. Inspiration occurs due to
A) Ribcage move upward
B) Diaphragm move upward
C) Air enters the lungs
D) A & B
Answer:
A) Ribcage move upward

AP 7th Class Science Bits Chapter 4 Respiration and Circulation with Answers

8. Quantity of nitrogen present in the inhaled air …………%.
A) 21
B) 25
C) 78
D) 0.4
Answer:
C) 78

9. Quantity of water vapour in exhaled air 0.4 …………%.
A) 15
B) 4
C) 78
D) 3
Answer:
D) 3

10. This gas turns lime water into milky white
A) Oxygen
B) Hydrogen
C) Carbon dioxide
D) Nitrogen
Answer:
C) Carbon dioxide

11. Find the correct statement
i) In the lungs, Carbon dioxide from the inhaled air is absorbed by the blood vessels present in the lungs.
ii) Oxygen collected by the blood vessels from all parts of the body enters into the Lungs.
A) both are correct
B) i only correct
C) ii only correct
D) both are wrong
Answer:
D) both are wrong

12. This will help to quit smoking.
A) Will power
B) support of the family and friends
C) medical and psychological treatment
D) All the above
Answer:
D) All the above

13. Nicotine is present in this leaf
A) Neem
B) Pipal
C) Tobacco
D) Betel
Answer:
C) Tobacco

14. Find the odd one
A) Grasshopper
B) Cockroach
C) Earthworm
D) Honey bee
Answer:
C) Earthworm

15. Frogs respires through
A) Lungs
B) Skin
C) Tracheae
D) Both A & B
Answer:
D) Both A & B

16. Fish respire through
A) Gills
B) Skin
C) Lung
D) Both A & B
Answer:
A) Gills

AP 7th Class Science Bits Chapter 4 Respiration and Circulation with Answers

17. Marine animal that respire through lung is
A) Fish
B) Dolphins
C) Prawn
D) Star fish
Answer:
B) Dolphins

18. Respiration in plants occurs through
A) Stomata
B) Lenticles
C) Root hairs
D) All the above
Answer:
D) All the above

19. Honey bee : Tracheae :: Earth worm : ?
A) Gill
B) Lung
C) Skin
D) None of, these
Answer:
C) Skin

20. In this process, energy released in our body
A) Photosynthesis
B) Digestion
C) Respiration
D) Circulation
Answer:
C) Respiration

21. This process helps in the supply of digested food and oxygen to all parts of the body
A) Digestion
B) Circulation
C) Excretion
D) Photosynthesis
Answer:
B) Circulation

22. This is not a part of circulatory system ….
A) Lungs
B) Heart
C) Blood vessels
D) Blood
Answer:
A) Lungs

AP 7th Class Science Bits Chapter 4 Respiration and Circulation with Answers

23. Upper two chambers of the heart are called
A) Arteries
B) Ventricles
C) Atria
D) Veins
Answer:
C) Atria

24. The fluid portion of the blood is
A) RBC
B) WBC
C) Blood platelets
D) Plasma
Answer:
D) Plasma

25. They protect us from the harmful, disease causing micro organisms that enter into our body.
A) RBC
B) WBC
C) Blood platelets
D) Plasma
Answer:
B) WBC

26. They play an important role in coagulation of blood…….
A) RBC
B) WBC
C) Blood platelets
D) Plasma
Answer:
C) Blood platelets

27. They plays a key role in respiration.
A) RBC
B) WBC
C) Blood platelets
D) Plasma
Answer:
A) RBC

28. Which of the following does not have blue coloured blood
A) Prawns
B) Snails
C) Cockroach
D) Crabs
Answer:
D) Crabs

29. This life processes play an important role in release of energy in organisms.
A) Digestion
B) Respiration
C) Circulation
D) All the above
Answer:
A) Digestion

30. Which of the following is not a non communicable diseases?
A) Heart attack
B) COVID – 19
C) Cancer
D) Paralysis
Answer:
B) COVID – 19

31. Identify the bacterial disease
A) Common cold
B) Polio
C) Tuberculosis
D) HIV
Answer:
C) Tuberculosis

AP 7th Class Science Bits Chapter 4 Respiration and Circulation with Answers

32. Identify the viral, disease
A) Typhoid
B) Common cold
C) Cholera
D) Tuberculosis
Answer:
B) Common cold

33. SMS protocol is for this disease
A) Polio
B) COVID
C) Cancer
D) Paralysis
Answer:
B) COVID

34. This is caused due to insufficient supply of Oxygen to the brain.
A) Coughing
B) Sneezing
C) Deglutition
D) Yawning
Answer:
D) Yawning

35. This process prevents the food from entering into the windpipe.
A) Coughing
B) Sneezing
C) Deglutition
D) Yawning
Answer:
C) Deglutition

AP 7th Class Science Bits Chapter 4 Respiration and Circulation with Answers

36. This occurs when the wind pipe is obstructed by an object leading to blocking of air….
A) Coughing
B) Sneezing
C) Deglutition
D) Choking
Answer:
D) Choking

II. Fill in the blanks

1. COVID -19 is caused by a virus called …………………… .
2. SARS means …………………… .
3. Giving assistance before a doctor attending is called …………………… .
4. The temporary arrest of respiration is called …………………… .
5. The process of inhalation and exhalation of air is called …………………… .
6. The process of inhaling air is called …………………… .
7. The process of exhalation of air is called …………………… .
8; The number of times we inhale and exhale air in a minute is called the
9. We breathe about …………………… times per minute normally.
10. One inhalation and one exhalation together called one
11. …………………… is the first part of the Wind pipe.
12. …………………… is the process which helps in the release of energy in our body.
13. …………………… are the respiratory organs in human beings.
14. The …………………… lung is slightly larger than the …………………… one.
15. Wind pipe is kept in its shape by …………………… .
16. Lungs are protected by …………………… .
17. …………………… is the thin muscular sheet attached to the lower side of the ribcage.
18. …………………… forms the floor of the chest cavity.
19. …………………… play key role in the respiratory movements in man.
20. …………………… play key role in the respiratory movements in woman.
21. …………………… are the only part of the human body which floats on water
22. …………………… is the gas produced in photosynthesis.
23. Percentage of carbon dioxide in the inhaled air is …………………… .
24. Percentage of oxygen in the inhaled air is …………………… .
25. Percentage of carbon dioxide in the exhaled air is …………………… .
26. Percentage of oxygen in the exhaled air is …………………… .
27. Lime water turns milky white when it reacts with …………………… .
28. Glucose + Oxygen → …………………… + water + Energy
29. Tobacco smoke contains a highly dangerous substance called
30. …………………… respiration is present in insects.
31. Breathing through the skin is called …………………… respiration.
32. Respiration carried out by gills is called …………………… .
33. Respiration through is called Pulmonary respiration.
34. Plants respire through on the leaf and on the stem.
35. …………………… is the pumping organ in the blood circulatory system.
36. Upper two chambers of the heart are called and lower two chambers are called …………………… .
37. The rhythmic contraction followed by its relaxation of the heart is called …………………… .
38. Heart beat can be felt and measured by an instrument called …………………… .
39. …………………… carry blood with more oxygen from heart to body parts.
40. …………………… carry blood with more carbon dioxide from the body parts to the heart.
41. …………………… connect the arteries with the Veins
42. …………………… is the fluid portion of the blood.
43. …………………… act like police force of our body.
44. Red blood cells have a colouring pigment called …………………… .
45. …………………… acts as a carrier for oxygen and carbon dioxide in blood.
46. …………………… play an important role in coagulation of blood …………………… .
47. Blood present in cockroach is
48. …………………… is the storage point for undigested food.
49. Blood in snails is …………………… in colour.
50. …………………… was the new disease that created a global impact recently.
51. …………………… is the inbuilt capacity of the body to fight and overcome the effects of disease-causing germs.
52. The entry of disease-causing germs into our body is called ……………… .
53. COVID-19 virus spreads primarily through …………………… of infected person.
Answer:

  1. SARS CoV – 2
  2. Severe Acute Respiratory Syndrome
  3. First aid.
  4. Apnea
  5. breathing
  6. inspiration
  7. expiration
  8. Respiratory Rate
  9. 14 to 20
  10. breath
  11. Larynx
  12. Respiration
  13. Lungs
  14. right
  15. C Shaped rings
  16. ribcage
  17. Diaphragm
  18. Diaphragm
  19. Diaphragm
  20. Ribcage
  21. Lungs
  22. Oxygen
  23. 0.04%
  24. 21%
  25. 4%
  26. 15%
  27. carbon dioxide
  28. Carbon dioxide
  29. Nicotine
  30. Tracheal
  31. cutaneous
  32. branchial respiration
  33. lungs
  34. stomata, lenticels
  35. Heart
  36. atria, ventricles
  37. heartbeat
  38. Stethoscope
  39. Arteries
  40. Veins
  41. Blood capillaries
  42. Plasma
  43. White blood cells
  44. Haemoglobin
  45. Haemoglobin
  46. Blood platelets
  47. colourless
  48. Rectum
  49. bluish
  50. COVID-19
  51. Immunity
  52. infection
  53. droplets of saliva or nasal discharges

III. Match the following

1.

Group – A Group – B
A) Opening of the nose 1) Nostrils
B) Mucus and nasal hair 2) Nasal cavity
C) Common chamber 3) Lungs
D) Wide tube 4) Wind pipe
E) Branches of wind pipe 5) Bronchi
F) Spongy and elastic 6) Pharynx

Answer:

Group – A Group – B
A) Opening of the nose 1) Nostrils
B) Mucus and nasal hair 2) Nasal cavity
C) Common chamber 6) Pharynx
D) Wide tube 5) Bronchi
E) Branches of wind pipe 4) Wind pipe
F) Spongy and elastic 3) Lungs

2.

Group – A Group – B
A) Red blood cells 1) Earthworm
B) White blood cells 2) Cockroach
C) Blood platelets 3) Carrier for oxygen and carbondioxide
D) Colourless blood 4) Coagulation of blood
E) Blue colour blood 5) Police force of our body
6) Snails

Answer:

Group – A Group – B
A) Red blood cells 3) Carrier for oxygen and carbondioxide
B) White blood cells 5) Police force of our body
C) Blood platelets 4) Coagulation of blood
D) Colourless blood 2) Cockroach
E) Blue colour blood 6) Snails

3.

Group – A Group – B
A) Sneezing 1) Wastes in the lungs expelled out
B) Yawning 2) Inhale air with dust
C) Coughing 3) Obstruction Of wind pipe leading to blocking Of air
D) Apnea 4) Bleeding injury
E) Choking 5) Insufficient supply of Oxygen to the brain
6) Prevents the food from, entering into the windpipe

Answer:

Group – A Group – B
A) Sneezing 2) Inhale air with dust
B) Yawning 5) Insufficient supply of Oxygen to the brain
C) Coughing 1) Wastes in the lungs expelled out
D) Apnea 6) Prevents the food from, entering into the windpipe
E) Choking 3) Obstruction Of wind pipe leading to blocking Of air

4.

Group – A Group – B
A) Typhoid 1) Non communicable diseases
B) Polio 2) Pumping organ in the circulatory system
C) Heart attack 3) Bacterial disease
D) Capillaries 4) Carry blood with more oxygen
E) Heart 5) Viral disease

Answer:

Group – A Group – B
A) Typhoid 3) Bacterial disease
B) Polio 5) Viral disease
C) Heart attack 1) Non communicable diseases
D) Capillaries 6) Connect the arteries with the veins
E) Heart 2) Pumping organ in the circulatory system