An experiment was arranged using two sealed test-tubes that contained aquatic plants and hydrogencarbonate indicator. In these sealed test-tubes, the indicator reveals the amount of dissolved carbon dioxide present. One sealed test-tube was left in light for 24 hours, while the other was left in darkness for 24 hours. The outcomes are given in the table. What is the correct explanation of what has occurred?
- APhotosynthesis and respiration both occur in the light, but the rate of photosynthesis is higher.
- BPhotosynthesis occurs in the light, but respiration does not.
- CRespiration can only occur when photosynthesis is not taking place.
- DThe amount of carbon dioxide used and produced in the light is equal.