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Biology 12 Chapter 14 Respiration - 13
1.
What is the function of cilia?
a) Both b and c
b) Moistening the air
c) Serve as a defence mechanism
d) To prevent the entry of microorganisms
2.
What is the function of mucus?
a) (c) Serve as a defence mechanism
b) (d) Move the trapped substances to the pharynx
c) (b) To prevent the entry of microorganisms
d) Both b and c
3.
Which of the following moves the trapped substances to the pharynx for their removal?
a) Mucus
b) Cilia
c) Nasal Cavity
d) Nostrils
4.
To where, cilia moves the trapped substances for their removal?
a) To the pharynx
b) Larynx
c) Trachea
d) Bronchi
5.
Why cilia move the trapped substances to the pharynx?
a) For their removal
b) For their absorption
c) For their purification
d) For their identification
6.
What is present underneath the mucus membrane?
a) Blood capillaries
b) Vestibules
c) Veins
d) Arteries
7.
Where are blood capillaries present in the upper respiratory system?
a) Underneath the mucus membrane
b) To the left side of the mucus membrane
c) Above the mucus membrane
d) Are not present
8.
Why are blood capillaries present beneath the mucus membrane?
a) To cool the air
b) To cool the cilia
c) To warm the cilia
d) To warm the air
9.
To which temperature, blood capillaries present beneath the mucus membrane warm the air?
a) 15°F
b) 15°C
c) 30°C
d) 30°F
10.
What is the function of cilia?
a) Serve as a defence mechanism
b) Both b and c
c) To prevent the entry of microorganisms
d) Moistening the air
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