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"

  • Total Questions12

  • Time Allowed15

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Gaseous Exchange

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Question # 1

Which waxy layer on the surface of plant leaves acts as a primary barrier to uncontrolled gaseous exchange and water loss, but also limits direct gas diffusion?

Question # 2

Where does the gaseous exchange occur in humans?

Question # 3

The muscles of ribs are called;

Question # 4

During exercise or other hard physical works the breathing rate may increase up to.

Question # 5

Amount of oxygen in expired air is:

Question # 6

How do submerged aquatic plants primarily exchange gases with their environment?

Question # 7

In wood seems and roots the gaseous:

Question # 8

Rate of breathing depends upon concentration of which gas:

Question # 9

Which structure actively helps in taking the air out of lungs?

Question # 10

During the daytime, plants primarily take in which gas from the atmosphere for photosynthesis?

Question # 11

The percentage of oxygen from air which we inspired is:

Question # 12

Which disease is involved in the breakdown of air sacs of the lungs?

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Prepare Complete Set Wise Chapter 1 "Gaseous Exchange" MCQs Online With Answers


Topic Wise MCQ Tests for 10th Class (English Medium) Biology Chapter 1

Topic #. Topic Name MCQs Available Launch Test
1.0 Gaseous Exchange In Plants 15 Launch Test
2.0 Gaseous Exchange In Humans 10 Launch Test
3.0 Respiratory Disorders 10 Launch Test

Topic Test

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10th Class (English Medium) Biology Chapter 1 Important MCQ's

Sr.# Question Answer
1 The opening and closing of stomata are regulated by specialized cells known as:
A. Epidermal cells.
B. Mesophyll cells.
C. Guard cells.
D. Xylem cells.
2 Which of the following conditions generally causes stomata to open in most plants during the day?
A. Low light intensity.
B. High internal CO2 concentration.
C. High turgor pressure in guard cells.
D. Dry atmospheric conditions.
3 During nighttime, when there is no light available for photosynthesis, what is the predominant net gaseous exchange pattern observed in most plants?
A. Plants primarily take in carbon dioxide and release oxygen.
B. Plants primarily take in oxygen and release carbon dioxide.
C. Plants take in both oxygen and carbon dioxide in equal amounts.
D. There is no significant gaseous exchange occurring at night.
4 Glottis is a narrow opening at the floor of:
A. Nasal cavity
B. Nostril
C. Pharynx
D. Antibiotics
5 No. of bronchi in the air passage way are:
A. 1
B. 2
C. 3
D. 4
6 What is the main characteristic of pneumonia, a lung infection?
A. Permanent dilation of bronchi
B. Inflammation of the lining of the lungs and fluid accumulation in alveoli
C. Spasms of the bronchial tubes
D. Destruction of the cilia in the trachea
7 In which of the following disease, the patient has usually lost 50% to 70% of his/her lung tissue when symptoms appears?
A. Pneumonia
B. Asthma
C. Emphy sema
D. Bronchitis
8 What happens to the stomata in most plants during the night?
A. They open wider to release excess oxygen.
B. They remain unchanged, irrespective of light.
C. They close to conserve water and prevent gas loss.
D. They partially open to allow minimal gas exchange.
9 The length of trachia is __________ cm approximately:
A. 10
B. 12
C. 14
D. 16
10 During nighttime, what is the net gaseous exchange observed in most plants?
A. Intake of CO2 and release of O2
B. Release of CO2 and intake of O2
C. Release of both CO2 and O2
D. No significant gaseous exchange occurs

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