WorksheetsRespiration in organisms for grade 7
Total questions: 10
Worksheet time: 5mins
Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?
alcohol and lactic acid
alcohol and CO2
lactic acid and CO2
lactic acid only
Yeast is used in wine and beer industries because it respires.
aerobically producing oxygen
aerobically producing alcohol
anaerobically producing alcohol
anaerobically producing CO2
During the process of exhalation, the ribs move
down and inwards
up and inwards
down and outwards
up and outward
Breathing is a process that
(i) provides O2 to the body.
(ii) breaks down food to release energy.
(iii) helps the body to get rid of CO2
(iv) produces water in the cells.
Which of the following gives the correct combination of functions of breathing?
(i) and (ii)
(ii) and (iii)
(i) and (iii)
(ii) and (iv)
Which are the gases involved in breathing?
O2 and NO2
O2 and SO2
O2 and O3
O2 and CO2
Name the organ of the body in which the blood is oxygenated.
Heart
Lungs
Lever
Pancreas
After heavy exercise, due to the accumulation of which substance we get muscle cramps ?
Malaic acid
Fumaric acid
Lipoic acid
Lactic acid
Yeasts are used in
wine and beer industry
bakery
in both
none of these
Breathing rate in human beings in normal condition is
12-15 times in a minute
15-18 times in a minute
18-22 times in a minute
22-25 times in a minute
In the following figure of respiratory system organs labelled by 1 and 2 are respectively:
Tracheae, Lungs
Lungs, Tracheae
Nasal cavity, Lungs
Lungs, Nasal cavity
