WorksheetsWJEC AS Biology Unit 2: Gas Exchange
Total questions: 19
Worksheet time: 7mins
Name
Class
Date
1.
Which of the following is a feature of exchange surfaces?
a)
High surface area
b)
Low surface area
2.
Which of the following is a feature of exchange surfaces?
a)
They are thin
b)
They are thick
3.
Which of the following is a feature of exchange surfaces?
a)
They are permeable
b)
They are impermeable
4.
Which of the following is a feature of exchange surfaces?
a)
They are moist
b)
They are desiccated
5.
Which of the following is a feature of exchange surfaces?
a)
They are ventilated
b)
They are unventilated
6.
What lines the tracheae of insects?
a)
Chitin
b)
Cartilage
c)
Lignin
d)
Collagen
7.
What does this graph show?
a)
Parallel flow in cartilaginous fish
b)
Counter current flow in bony fish
8.
What does this graph show?
a)
Parallel flow in cartilaginous fish
b)
Counter current flow in bony fish
9.
What is the principal exchange surface of larval amphibians?
a)
Skin
b)
Lungs
c)
Gills
10.
What is the gas exchange surface of mammals?
a)
Alveoli
b)
Bronchioles
c)
Trachea
d)
Pleural fluid
11.
What reduces friction between the lungs and the ribs in mammals?
a)
Diaphragm
b)
Bronchioles
c)
Trachea
d)
Pleural fluid
12.
Which statement correctly describes inspiration in mammals?
a)
Diaphragm contracts and flattens, intercostal muscles contract and lift ribs up and out
b)
Diaphragm contracts and flattens, intercostal muscles relax; ribs move down and in
c)
Diaphragm relaxes and is pushed up, intercostal muscles contract and lift ribs up and out
d)
Diaphragm relaxes and is pushed up, intercostal muscles relax; ribs move down and in
13.
What is the volume of air normally breathed in and out called?
a)
Residual volume
b)
Tidal volume
c)
Vital capacity
14.
What is the volume of air left in the lungs after a forced exhale called?
a)
Residual volume
b)
Tidal volume
c)
Vital capacity
15.
What is the exchange surface in leaves?
a)
Spongy mesophyll
b)
Palisade mesophyll
c)
Lower epidermis
d)
Upper epidermis
16.
What is the main photosynthetic layer in leaves?
a)
Spongy mesophyll
b)
Palisade mesophyll
c)
Lower epidermis
d)
Upper epidermis
17.
What layer contains the most stomata?
a)
Spongy mesophyll
b)
Palisade mesophyll
c)
Lower epidermis
d)
Upper epidermis
18.
What layer is transparent?
a)
Spongy mesophyll
b)
Palisade mesophyll
c)
Lower epidermis
d)
Upper epidermis
19.
What is the correct description of the cause of stomatal opening?
a)
K+ ions actively pumped into guard cells, water potential drops.
b)
K+ ions diffuse out of guard cells, water potential rises.
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