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Question-1
The exchange of gases between the environment and the body is called:
(A)
Cellular respiration
(B)
Internal respiration
(C)
External respiration
(D)
Combustion
Question-2
The stomata are surrounded by:
(A)
Lenticels
(B)
Guard cells
(C)
Spiracles
(D)
Pneumatophores
Question-3
The total surface area of lungs.
(A)
70 square meters
(B)
50 square meters
(C)
40 square meters
(D)
10 square meters
Question-4
The small pores or openings on the outer skin of plants.
(A)
Pneumatophores
(B)
Lenticels
(C)
Stomata
(D)
Alveoli
Question-5
The openings through which we inhale.
(A)
Nostrils
(B)
Alveoli
(C)
Bronchioles
(D)
Trachea
Question-6
The portion of the respiratory tract that is responsible for sound production.
(A)
Larynx
(B)
Bronchi
(C)
Pharynx
(D)
Alveoli
Question-7
Who invented crescograph?
(A)
Jagadish Chandra Bose
(B)
C V Raman
(C)
Linnaeus
(D)
Fleming
Question-8
The pigment present in the blood of earthworm.
(A)
Haemoglobin
(B)
Chlorophyll
(C)
Anthocyanin
(D)
Bilirubin
Question-9
The oxygen content in the natural air.
(A)
0.03%
(B)
21%
(C)
25%
(D)
10%
Question-10
The respiratory organ in fishes.
(A)
Gills
(B)
Lungs
(C)
Trachea
(D)
Skin
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Cambridge Secondary Grade 7
IGCSE
Practice in Related Chapters
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Acids, Bases and Salts
Chemicals and Chemical Change
The Living World and its Surroundings
Movement of Substances
Waste Management
Fibres and Animals
Scarcity of Water
Multiplication in Plants
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