Which of the following is not part of the human respiratory system?
lungs
oesophagus
trachea
diaphragm
In cockroaches, air enters the body through
gills
spiracles
skin
Which of the following does not have lungs for breathing?
lizard
frog
fish
fox
Yeast converts glucose into
starch
alcohol
lactic acid
sugar
During exhalation, the rib cage
moves upward and outwards
moves downward and inwards
moves from side to side
does not moves at all
The process which involves the exchange of gases is called
Respiration
Circulation
Digestion
Breathing
The animal which can breathe through the lungs as well as through skin is
Fish
Dolphin
Frog
Crocodile
The normal range of 'breathing rate' per minute of an average adult person at rest is
9-12
15-18
21-24
30-33
Which of the following animals breathe through their skin?
Snake
Earthworm
One of the following does not have gills for breathing. This one is
prawn
crab
whale