10th Class Biology Chapter 1 English Medium Online MCQ Test With Answer
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MCQ's Test For Chapter 1 "Gaseous Exchange"
Try The MCQ's Test For Chapter 1 "Gaseous Exchange"
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Solved Mcqs File
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Khalilurahman Mohammad07 - Dec - 2025
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Awais Malik28 - Oct - 2025
00 Min 53 Sec
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00 Min 59 Sec
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01 Min 22 Sec
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01 Min 34 Sec
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10th Class (English Medium)
Biology
Chapter 1
Important MCQ's
Sr.#
Question
Answer
1
Amount of nitrogen in expired air is:
A. 70%
B. 80%
C. 79%
D. 4%
2
For gaseous exchange the leaf and young stems have in their epidermis:
A. Stomata
B. Lenticels
C. Companion cell
D. Guard cells
3
What is the primary characteristic of asthma?
A. Permanent damage to alveolar walls
B. Inflammation of the pharynx
C. Spasms of the bronchi and bronchioles, narrowing the airways
D. Fluid accumulation in the pleural cavity
4
In man the system of gaseous exchange is:
A. digestive system
B. respiratory system
C. nervous system
D. excretory system
5
It is also called sound box:
A. trachea
B. larynx
C. pharynx
D. bronchus
6
Where does the gaseous exchange occur in humans:
A. Pharynx
B. Larynx
C. Trachea
D. Epiglottis
7
Pneumonia is an infection of the lungs that can be caused by bacteria, viruses, or fungi. What is the main effect of pneumonia on the lungs?
A. Thickening of the vocal cords
B. Collapse of the trachea
C. Inflammation and fluid accumulation in the alveoli
D. Hardening of the diaphragm
8
What is the primary function of the human kidneys?
A. Pumping blood throughout the body
B. Filtering waste products from the blood and producing urine
C. Producing digestive enzymes for the small intestine
D. Regulating body temperature through sweating
9
Which gas diffuses from the alveoli into the blood capillaries during the process of gaseous exchange?
A. Carbon dioxide
B. Oxygen
C. Nitrogen
D. Methane
10
What primary factor directly regulates the opening and closing of stomata in plant leaves?
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