★ RESPIRATION.
Experiment demostrated by teacher in class today.

Procedure:
1) Put and equal amount of hydrogen carbonate indicator into 3 test tubes.
2) Put 40 mealworms into 1 test tube and 20 into another.
( To indicate that respiration has taken place, the hydrogen carbonate indicator will turn yellow and if respiration had not taken place (no carbon dioxide) it will remain purple in colour. )
3)A test tube without any mealworm was passed around in the class and we had to blow directly(for carbon dioxide) into it for 5 minutes.
4) Leave mealworms in test tube for respiration to take place for 40minutes.
5) Observe colour change in the hydrogen carbonate indicator.

Results:
1) In the test tube where there was 40 mealworms, it was yellowish and had the brightest red in colour.
2) In the test tube where there was 20 mealworms, it was yellowish red in colour.
3) In the test tube where we were breathing into, it was the darkest red in colour.

Conclusion:
This shows that the 40 meal worms had produced the most carbon dioxide and it also shows that the more amount of meal worms respiring, the more the carbon dioxide is produced. The amount of time also affects the experiments, the longer the experiment the more the carbon dioxide produced.

Experiment error: The mealworm was respiring for a longer period of time thus it would have produced a higher amount of carbon dioxide compared to the test tube that we were breathing into for only 5 minutes.