Choose the best option for each of the following statement.
i.
The exchange of gases in plants can occur
through:
a. Root
b. Stem
c. Stomata
d. All of these
ii.
Respiratory surface possesses following
property(ies):
a. Thin and wet
b. Very large
c. Permeable
d. All of these
iii.
Which of the following(s) is/are related to
respiration?
a. Catabolic process
b. Release oxygen gas
c. Chlorophyll is required
d. Occurs only in day time.
iv.
Guard cells have:
a. Thin outer wall
b. Thick inner wall
c. Elasticity
d. All of these
v.
The amount of molecular oxygen in air is about 21% but in water, it
is:
a. 5%
b. 10%
c. 15%
d. 25%
vi.
The total respiratory surface area of human is almost times to the size of human body.
a. 5
b. 10
c. 15
d. 20
vii.
Pleural membrane is the protective membrane of:
a. Kidneys
b. Heart
c. Brain
d. Lungs
viii.
There is a lid like cover in the opening of larynx, called:
a. Glottis
b. Epiglottis
c. Pharynx
d. Trachea
ix.
The composition of Nitrogen in air is:
a. 21%
b. 0.03%
c. 78%
d. None of these
x.
The air we breathe in, consists of mainly:
a. Oxygen
b. Carbon dioxide
c. Nitrogen
d. Other gases
