Which of the following is not a product of aerobic respiration? 

During heavy exercise, we get cramps in the legs due to the accumulation of 

The energy of food which we eat is released slowly inside our body by the process called 

One of the following does not have gills for breathing. This one is 

Which of the following had haemoglobin containing blood? 

During respiration in humans, the exchange of gases takes place in 

As compared to inhaled air, the exhaled air contains more of 

a. Water vapour

b. Oxygen

c. Carbondioxide

d. Nitrogen 

Which of the following does not have lungs for breathing? 

In cockroaches, air enters the body through

Yeast converts glucose into