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The given graph shows changes in pH of w...

The given graph shows changes in pH of water in an undisturbed freshwater lake on a summer day.
What is the probable cause of the rise in pH of water between time period X and Y?

A

Decreased level of mineral nutrients in water.

B

Decreased level of carbon dioxide in water due to photosynthesis performed by water plants.

C

Increased level of carbon dioxide in water due to respiration performed by water plants and animals.

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
During day time aquatic plants will perform photosynthesis and use up the carbon dioxide present in water this will decrease the amount of dissolved carbon dioxide and increase the pH of water.
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