Why AFNS Biology Past Papers Are Essential for Exam Success

If you are preparing for the AFNS (Armed Forces Nursing Service) entry test in the Pakistan Army, mastering biology is crucial for your success. AFNS Biology Past Papers provide an invaluable resource, as they contain a comprehensive collection of previous exam questions from students who have successfully cleared the biology section. These past papers help you understand the exam pattern, important topics, and frequently asked MCQs.

To prepare effectively, you can access AFNS Biology Past Papers for free online practice. By studying these MCQs, you will enhance your knowledge, improve your test-taking skills, and boost your confidence. Whether you’re revising key concepts or taking mock tests, this resource is essential for your AFNS exam preparation. Start practicing today and increase your chances of securing a position in the Pakistan Army’s Nursing Service!

How to Effectively Use AFNS Biology Past Papers for Preparation

Q1. Organisms need energy in the form of:
A. GMP
B. GTP
C. AMP
D. ATP
Correct Answer: D

Q2. In plants, gaseous exchange occurs through:
A. Stomata
B. Cuticle
C. Lenticels
D. All of these
Correct Answer: D

Q3. The aquatic plants get oxygen from:
A. Soil
B. Water
C. Air
D. None of these
Correct Answer: B

Q4. The nasal cavity opens into:
A. Glottis
B. Epiglottis
C. Pharynx
D. Larynx
Correct Answer: C

Q5. Muscular passage common to both food and air:
A. Pharynx
B. Larynx
C. Trachea
D. Oesophagus
Correct Answer: A

Q6. Which organ is also called as voice box?
A. Nostrils
B. Pharynx
C. Larynx
D. Glottis
Correct Answer: C

Q7. Vibrations of which produce sound?
A. Trachea
B. Oesophagus
C. Vocal cords
D. Nostrils
Correct Answer: C

Q8. Movements of which organs result in speech?
A. Lips
B. Cheeks
C. Tongue
D. All of these
Correct Answer: D

Q9. Which organs have ciliated and glandular cells?
A. Trachea
B. Bronchi
C. Both A & B
D. None of these
Correct Answer: C

Q10. How many lungs are present in thoracic cavity?
A. 4
B. 3
C. 2
D. 1
Correct Answer: C

Q11. Which thick muscular structure is present below the lungs?
A. Diaphragm
B. Trachea
C. Intercostals
D. Ribs
Correct Answer: A

Q12. How many lobes are present in left lung?
A. 1
B. 2
C. 3
D. 4
Correct Answer: B

Q13. The physical movements associated with gaseous exchange are called:
A. Breathing
B. Peristalsis
C. Swallowing
D. Chewing
Correct Answer: A

Q14. During inspiration, the volume of the thoracic cavity:
A. Increases
B. Decreases
C. Remains constant
D. Lessens
Correct Answer: A

Q15. During expiration, the rib muscles:
A. Contract
B. Relax
C. Remain as such
D. None of these
Correct Answer: B

Q16. The respiration centre that controls breathing is located in:
A. Brain
B. Kidney
C. Heart
D. Lungs
Correct Answer: A

Q17. To which organs the respiratory centre sends messages?
A. Intercostal muscles
B. Diaphragm
C. Both A and B
D. None of these
Correct Answer: C

Q18. Amount of oxygen in inspired air:
A. 21%
B. 16%
C. 18%
D. 14%
Correct Answer: A

Q19. Amount of carbon dioxide in inspired air:
A. 4%
B. 0.04%
C. 0.5%
D. 2%
Correct Answer: B

Q20. Amount of nitrogen in inspired air:
A. 70%
B. 72%
C. 76%
D. 79%
Correct Answer: D

Key Topics Covered in AFNS Biology Past Papers

Q21. Water vapors in inspired air:
A. Variable
B. Saturated
C. Almost none
D. All of these
Correct Answer: A

Q22. Dust particles in inspired air:
A. Variable
B. Saturated
C. Almost none
D. All of these
Correct Answer: A

Q23. The inflammation of the bronchi or bronchioles:
A. Asthma
B. Pneumonia
C. Emphysema
D. Bronchitis
Correct Answer: D

Q24. An infection of lungs:
A. Asthma
B. Pneumonia
C. Emphysema
D. Bronchitis
Correct Answer: B

Q25. The symptoms of which disease vary from person to person?
A. Asthma
B. Pneumonia
C. Emphysema
D. Bronchitis
Correct Answer: A

Q26. Virus of which disease can cause pneumonia?
A. Hepatitis
B. Polio
C. AIDS
D. Influenza
Correct Answer: D

Q27. Inhalers are used to treat:
A. Pneumonia
B. Lung cancer
C. Asthma
D. Emphysema
Correct Answer: C

Q28. How many different chemicals are present in cigarette smoke?
A. Less than 400
B. Less than 4000
C. More than 4000
D. More than 2000
Correct Answer: C

Q29. How many persons die each year by lung cancer worldwide?
A. 1000000
B. 1,100,000
C. 1,200,000
D. 1,300,000
Correct Answer: D

Q30. At what percentage, the rate of smoking is increasing in developing countries?
A. 1.4%
B. 1.6%
C. 2.4%
D. 3.4%
Correct Answer: D

Q31. The process of gaseous exchange involves:
A. Breakdown of C-H bonds to yield energy
B. Physical movements that take air in and out of body
C. Getting oxygen from the air and removing carbon dioxide
D. Transport of oxygen by the blood to different parts of the body
Correct Answer: C

Q32. Most of the gaseous exchange in a leaf occurs through:
A. Stomata
B. General surface
C. Cuticle
D. Lenticels
Correct Answer: A

Q33. How many bronchi are there in the air passageway?
A. One
B. Two
C. Many
D. None
Correct Answer: B

Q34. Where does the gaseous exchange occur in humans?
A. Pharynx
B. Trachea
C. Bronchi
D. Alveoli
Correct Answer: D

Q35. Which structure actively helps in taking the air out of lungs?
A. Nasal cavity
B. Bronchus
C. Bronchiole
D. Diaphragm
Correct Answer: D

Q36. The primary chemical stimulus for breathing is the concentration of:
A. Carbon dioxide in blood
B. Oxygen in blood
C. Carbon dioxide in muscles
D. Oxygen in muscles
Correct Answer: A

Q37. Point out the FALSE statement about respiration:
A. Gases can easily pass through the walls of the alveoli
B. Gas exchange in lungs is very efficient because lungs provide large surface area
C. In emphysema the walls of alveoli break and there is more surface area
D. Dust particles can damage the lung by irritating the inner alveoli surface
Correct Answer: C

Q38. A disease involving the breakdown of air sacs of the lungs is:
A. Pneumonia
B. Bronchitis
C. Asthma
D. Emphysema
Correct Answer: D

Q39. Which process does not occur in the nasal cavity?
A. Trapping of large dust particles
B. Humidification of the inhaled air
C. Warming of the inhaled air
D. Exchange of gases
Correct Answer: D

Q40. What type of blood vessels surrounds the alveoli?
A. Artery
B. Arteriole
C. Capillary
D. Vein
Correct Answer: C

Online Practice of AFNS Biology Past Papers (Matric Level)

Free Online Practice Tests Based on AFNS Biology Past Papers

Q41. Define cellular respiration.
A. The process of taking in oxygen and releasing carbon dioxide
B. The breakdown of food molecules to release energy
C. The process in which carbon-hydrogen bonds in food are broken by oxidation-reduction reactions
D. The mechanical process of breathing
Correct Answer: C

Q42. What is aerobic respiration?
A. Respiration using oxygen with complete oxidation of food
B. Respiration without using oxygen
C. The exchange of gases in alveoli
D. The process of breathing
Correct Answer: A

Q43. In what form is energy available to organisms?
A. Glucose
B. ATP
C. ADP
D. AMP
Correct Answer: B

Q44. Define gaseous exchange.
A. The process of breathing
B. Taking in oxygen and giving out carbon dioxide
C. The cellular process of energy production
D. The movement of air through respiratory tract
Correct Answer: B

Q45. Define breathing.
A. The cellular process of energy production
B. The mechanical process of air exchange
C. The oxidation of food molecules
D. The movement of oxygen in blood
Correct Answer: B

Q46. What is the difference between respiration and breathing?
A. Respiration is mechanical while breathing is biochemical
B. Breathing is mechanical while respiration involves both mechanical and biochemical processes
C. They are identical processes
D. Respiration occurs in plants while breathing occurs in animals
Correct Answer: B

Q47. How is speech produced?
A. By vibration of vocal cords only
B. By movement of tongue only
C. By vibrations of vocal cords and movements of lips, cheeks, and tongue
D. By air movement through trachea
Correct Answer: C

Q48. What is the function of mucus secreted by trachea and bronchi?
A. To trap dust and bacteria
B. To produce sound
C. To exchange gases
D. To pump air
Correct Answer: A

Q49. What is the function of cilia in trachea and bronchi?
A. To produce mucus
B. To move mucus upward
C. To exchange gases
D. To vibrate and produce sound
Correct Answer: B

Q50. Are breathing movements voluntary or involuntary?
A. Completely voluntary
B. Completely involuntary
C. Mostly involuntary but can be controlled temporarily
D. Only voluntary during sleep
Correct Answer: C

Q51. Why is the percentage of respiratory disorders higher in Pakistan?
A. Due to genetic factors
B. Because of high altitude
C. Due to air pollution concentration
D. Because of cold climate
Correct Answer: C

Q52. What was the death rate of pneumonia before antibiotics?
A. 10%
B. 25%
C. 33%
D. 50%
Correct Answer: C

Q53. What is the death rate of lung cancer?
A. 500,000 annually
B. 800,000 annually
C. 1 million annually
D. 1.3 million annually
Correct Answer: D

Q54. What happens to lungs when a person stops smoking?
A. Immediate complete recovery
B. Gradual repair and contaminant removal
C. No change occurs
D. Lungs deteriorate further
Correct Answer: B

Q55. What is nicotine?
A. A vitamin
B. A powerful poison
C. A lung stimulant
D. A respiratory enzyme
Correct Answer: B

Q56. What are the observations about smoking rates by WHO?
A. Increasing worldwide
B. Declining in developed world
C. Stable in all regions
D. Only increasing in Africa
Correct Answer: B

Q57. When is World No Tobacco Day celebrated?
A. May 15
B. May 31
C. June 5
D. April 22
Correct Answer: B

Q58. What percentage of passive smokers develop heart disease?
A. 10-15%
B. 15-20%
C. 20-25%
D. 25-30%
Correct Answer: D

Q59. How does smoking affect social life?
A. Improves social acceptance
B. Causes social unacceptance
C. No effect
D. Makes people more popular
Correct Answer: B

Q60. Explain gaseous exchange in plants:
A. Only through stomata
B. Through specialized lungs
C. Through multiple structures including stomata and lenticels
D. Only at night
Correct Answer: C

Tips for Solving AFNS Biology Past Papers with High Accuracy

If you want to clear AFNS Biology Past Papers then learn all the given past experiences of biology mcqs which help to score high in the initial tests of AFNS.

Q41. Define cellular respiration.
A. The process of taking in oxygen and releasing carbon dioxide
B. The breakdown of food molecules to release energy
C. The process in which carbon-hydrogen bonds in food are broken by oxidation-reduction reactions
D. The mechanical process of breathing
Correct Answer: C

Q42. What is aerobic respiration?
A. Respiration using oxygen with complete oxidation of food
B. Respiration without using oxygen
C. The exchange of gases in alveoli
D. The process of breathing
Correct Answer: A

Q43. In what form is energy available to organisms?
A. Glucose
B. ATP
C. ADP
D. AMP
Correct Answer: B

Q44. Define gaseous exchange.
A. The process of breathing
B. Taking in oxygen and giving out carbon dioxide
C. The cellular process of energy production
D. The movement of air through respiratory tract
Correct Answer: B

Q45. Define breathing.
A. The cellular process of energy production
B. The mechanical process of air exchange
C. The oxidation of food molecules
D. The movement of oxygen in blood
Correct Answer: B

Q46. What is the difference between respiration and breathing?
A. Respiration is mechanical while breathing is biochemical
B. Breathing is mechanical while respiration involves both mechanical and biochemical processes
C. They are identical processes
D. Respiration occurs in plants while breathing occurs in animals
Correct Answer: B

Q47. How is speech produced?
A. By vibration of vocal cords only
B. By movement of tongue only
C. By vibrations of vocal cords and movements of lips, cheeks, and tongue
D. By air movement through trachea
Correct Answer: C

Q48. What is the function of mucus secreted by trachea and bronchi?
A. To trap dust and bacteria
B. To produce sound
C. To exchange gases
D. To pump air
Correct Answer: A

Q49. What is the function of cilia in trachea and bronchi?
A. To produce mucus
B. To move mucus upward
C. To exchange gases
D. To vibrate and produce sound
Correct Answer: B

Q50. Are breathing movements voluntary or involuntary?
A. Completely voluntary
B. Completely involuntary
C. Mostly involuntary but can be controlled temporarily
D. Only voluntary during sleep
Correct Answer: C

Q51. Why is the percentage of respiratory disorders higher in Pakistan?
A. Due to genetic factors
B. Because of high altitude
C. Due to air pollution concentration
D. Because of cold climate
Correct Answer: C

Q52. What was the death rate of pneumonia before antibiotics?
A. 10%
B. 25%
C. 33%
D. 50%
Correct Answer: C

Q53. What is the death rate of lung cancer?
A. 500,000 annually
B. 800,000 annually
C. 1 million annually
D. 1.3 million annually
Correct Answer: D

Q54. What happens to lungs when a person stops smoking?
A. Immediate complete recovery
B. Gradual repair and contaminant removal
C. No change occurs
D. Lungs deteriorate further
Correct Answer: B

Q55. What is nicotine?
A. A vitamin
B. A powerful poison
C. A lung stimulant
D. A respiratory enzyme
Correct Answer: B

Q56. What are the observations about smoking rates by WHO?
A. Increasing worldwide
B. Declining in developed world
C. Stable in all regions
D. Only increasing in Africa
Correct Answer: B

Q57. When is World No Tobacco Day celebrated?
A. May 15
B. May 31
C. June 5
D. April 22
Correct Answer: B

Q58. What percentage of passive smokers develop heart disease?
A. 10-15%
B. 15-20%
C. 20-25%
D. 25-30%
Correct Answer: D

Q59. How does smoking affect social life?
A. Improves social acceptance
B. Causes social unacceptance
C. No effect
D. Makes people more popular
Correct Answer: B

Q60. Explain gaseous exchange in plants:
A. Only through stomata
B. Through specialized lungs
C. Through multiple structures including stomata and lenticels
D. Only at night
Correct Answer: C

Free Online practice of AFNS Biology Past Papers (Intermediate Level)

Q61. What is the path of air in human respiratory system?
A. Nostrils→pharynx→larynx→trachea→bronchi→bronchioles→alveoli
B. Nostrils→larynx→pharynx→trachea→bronchioles→bronchi→alveoli
C. Nostrils→trachea→pharynx→larynx→bronchi→bronchioles→alveoli
D. Nostrils→pharynx→trachea→larynx→bronchioles→bronchi→alveoli
Correct Answer: A

Q62. What is the function of nasal cavity?
A. Only smell detection
B. Filtering, warming and moistening air
C. Producing mucus for digestion
D. Storing oxygen
Correct Answer: B

Q63. What protects the trachea from collapsing?
A. Smooth muscles
B. C-shaped cartilages
C. Bone plates
D. Elastic fibers
Correct Answer: B

Q64. Where does actual gas exchange occur in lungs?
A. Bronchi
B. Bronchioles
C. Alveoli
D. Trachea
Correct Answer: C

Q65. What happens during inhalation?
A. Ribs lower, diaphragm rises
B. Ribs raise, diaphragm lowers
C. Ribs and diaphragm remain static
D. Only diaphragm contracts
Correct Answer: B

Q66. What controls breathing rate?
A. Heart rate
B. Blood pressure
C. Respiratory center in brain
D. Lung capacity
Correct Answer: C

Q67. What stimulates increased breathing during exercise?
A. Low oxygen
B. High carbon dioxide
C. Low nitrogen
D. High temperature
Correct Answer: B

Q68. Comparison of inspired vs expired air shows:
A. More CO₂ in inspired air
B. More O₂ in expired air
C. Same nitrogen percentage
D. Less water vapor in expired air
Correct Answer: C

Q69. What causes bronchitis?
A. Only viruses
B. Only bacteria
C. Viruses, bacteria or irritants
D. Only genetic factors
Correct Answer: C

Q70. What happens in emphysema?
A. Bronchi inflammation
B. Alveoli walls destroyed
C. Lung cancer develops
D. Mucus production stops
Correct Answer: B

Q71. What fills pneumonia-infected alveoli?
A. Oxygen
B. Fluid and pus
C. Blood clots
D. Air bubbles
Correct Answer: B

Q72. What characterizes asthma?
A. Bacterial infection
B. Allergic airway narrowing
C. Alveoli destruction
D. Lung collapse
Correct Answer: B

Q73. Main cause of lung cancer?
A. Exercise
B. Smoking
C. Cold air
D. Pollen
Correct Answer: B

Q74. How many carcinogens in cigarette smoke?
A. About 10
B. About 20
C. At least 50
D. Over 100
Correct Answer: C

Q75. Effect of CO in smoke?
A. Improves oxygen transport
B. Reduces oxygen carrying capacity
C. Stimulates lung growth
D. Kills bacteria
Correct Answer: B

Q76. Proteins are polymers of:
A. Monosaccharides
B. Amino acids
C. Fatty acids
D. Nucleotides
Correct Answer: B

Q77. Enzymes function as:
A. Structural components
B. Biological catalysts
C. Energy storage
D. Genetic material
Correct Answer: B

Q78. DNA nucleotides contain all EXCEPT:
A. Phosphate group
B. Deoxyribose sugar
C. Nitrogenous base
D. Amino acid
Correct Answer: D

Q79. The base pairing rule in DNA is:
A. A-T, G-C
B. A-U, G-C
C. A-G, T-C
D. Random
Correct Answer: A

Q80. Which is NOT a type of RNA?
A. mRNA
B. tRNA
C. rRNA
D. zRNA
Correct Answer: D

Free Online Tests Practice of MCQs other than AFNS Biology Past Papers

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FAQs

1. How Many Marks Are Required for AFNS?

The passing marks for AFNS (Armed Forces Nursing Service) vary each year based on competition and merit. However, candidates generally need at least 50% to 60% in the initial written test to qualify for the next stages (interview and medical tests). Higher scores (70% or above) increase selection chances.

• Passing marks depend on overall candidate performance.
• Aim for 60%+ to stay competitive.
• Merit lists are announced after written and interview phases.

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2. How Many MCQs Are There in the AFNS Test?

The AFNS entry test consists of 50-100 MCQs, covering:

• Biology (15-20 MCQs) – Major portion
• Chemistry (10-15 MCQs)
• Physics (10-15 MCQs)
• English & General Knowledge (10-15 MCQs)
• Biology carries the highest weightage.
• Time limit: 40-60 minutes (varies per test center).
• Negative marking may apply (confirm from official sources).

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3. What Is the First Test of AFNS?

The first test in AFNS selection is the written entry exam, which includes:

• Multiple-choice questions (MCQs) on Biology, Chemistry, Physics, and English/GK.
• Conducted at Army Selection & Recruitment Centers (AS&RCs).
• Successful candidates proceed to interviews, medical tests, and final merit lists.
• No physical test for AFNS (unlike PMA/Long Course).
• Written test is elimination-based; high scores matter.

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4. What Is the Name of the AFNS Preparation Book?

The best books for AFNS preparation include:

1. “Free Online Quiz of Shaheen Forces Academy” – Covers Biology, Chemistry, Physics, and English MCQs.
2. “Caravan AFNS Book” – Includes past papers and model tests.
3. “Punjab Textbook Board (PTB) FSc Books” – For in-depth Biology/Chemistry concepts.
4. “Ilmi AFNS Entry Test Series” – Practice MCQs with explanations.

• Focus on Biology-heavy books (70% of the test).
• Past papers are critical for pattern recognition.

More Past Experiences MCQs for Army Navy and PAF Initial Tests