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Question
The given shows the productivity of an aquatic ecosystem measured in terms of dissolved oxygen produced and consumed by green plants and photosynthetic algae where PS=Photosynthesis and R=respiration. What will happen during the algal bloom?
The given shows the productivity of an aquatic ecosystem measured in terms of dissolved oxygen produced and consumed by green plants and photosynthetic algae where PS=Photosynthesis and R=respiration. What will happen during the algal bloom?
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Solution
The correct option is D PS + R will increase
During photosynthesis, green plants produce oxygen which leads to increase in dissolved oxygen in an aquatic ecosystem. Respiration uses oxygen and hence causes decrease in dissolved oxygen. The excess growth of planktonic algae that causes colouration of water is called algal bloom. The increased growth in photosynthetic algae will lead to more photosynthesis which will increase PS+R ultimately.So, the correct answer is 'PS + R will increase'.
During photosynthesis, green plants produce oxygen which leads to increase in dissolved oxygen in an aquatic ecosystem. Respiration uses oxygen and hence causes decrease in dissolved oxygen. The excess growth of planktonic algae that causes colouration of water is called algal bloom. The increased growth in photosynthetic algae will lead to more photosynthesis which will increase PS+R ultimately.
So, the correct answer is 'PS + R will increase'.
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