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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Top Scorers Of Chapter 1 "Gaseous Exchange" MCQ`s Test
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00 Min 07 Sec
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00 Min 49 Sec
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Umer Daraz03 - Jan - 2026
01 Min 01 Sec
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BILAL IKRAM29 - Nov - 2025
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Muhammad Hissam04 - Nov - 2025
01 Min 57 Sec
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usman ghani20 - Nov - 2025
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Khalilurahman Mohammad07 - Dec - 2025
02 Min 26 Sec
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Mian Hassan14 - Jan - 2026
02 Min 58 Sec
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Awais Malik28 - Oct - 2025
00 Min 53 Sec
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Mahrukh05 - Nov - 2025
00 Min 59 Sec
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Zunaira Athar17 - Oct - 2025
01 Min 34 Sec
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01 Min 35 Sec
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Mehar Zain26 - Nov - 2025
02 Min 13 Sec
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Nayab Ahmad Rajpoot18 - Oct - 2025
02 Min 37 Sec
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Abdur Rafay Sabir13 - Oct - 2025
01 Min 24 Sec
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10th Class (English Medium)
Biology
Chapter 1
Important MCQ's
Sr.#
Question
Answer
1
How do root hair cells primarily obtain oxygen for respiration from the soil?
A. Through direct absorption from atmospheric air.
B. By diffusing from air spaces present in the soil.
C. By actively transporting oxygen from water.
D. By producing their own oxygen through photosynthesis.
2
Which of the following is considered the leading cause of lung cancer and other chronic respiratory diseases?
A. Exposure to cold weather
B. Excessive consumption of sugary drinks
C. Smoking tobacco
D. Lack of physical exercise
3
Stomata are present in:
A. Phloem
B. Xylem
C. Endodermis
D. Epidermis
4
Lenticels are small pores found on the surface of which plant structures, enabling gaseous exchange?
A. Young leaves
B. Flower petals
C. Woody stems and roots
D. Fruit skins
5
How many lobs are present in right lung?
A. 2
B. 3
C. 4
D. 5
6
Which gas is released by plants during cellular respiration, both day and night?
A. Oxygen
B. Carbon dioxide
C. Methane
D. Hydrogen
7
The respiratory centre is present in :
A. Lungs
B. Brain
C. Nose
D. Muscles
8
What primary factor directly regulates the opening and closing of stomata in plant leaves?
A. Root pressure
B. Turgor pressure in guard cells
C. Xylem sap flow
D. Phloem transport
9
What are the tiny air sacs in the lungs where the actual exchange of gases (oxygen and carbon dioxide) occurs?
A. Bronchi
B. Trachea
C. Bronchioles
D. Alveoli
10
In which respiratory disorder do the walls of the alveoli break down, leading to a reduction in the surface area for gas exchange?
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