Activity:
Imagine you have three closed glass jars A,B and c representing three ecosystems.
Jar A contains only algae, B only snails and C contains both algae and snails.
All these jars are provided with sunlight. After some time, it is noticed that the algae in jar A and the snails in jar B begin to deteriorate, while the snails and algae in jar C do not show any change.Keeping your Knowledge of ecosystem in mind, Explain the above observations.
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This experiment explains the concept of photosynthesis.
Algae is a green plant meaning it has chlorophyll thus can manufacture food in the presence of sunlight.
In the presence of sunlight and chlorophyll, algae manufactures glucose from carbon (iv) oxide and water and gives off oxygen and glucose.
In the jar A the algae deteriorates since there is depletion of CO₂ given that the container is covered meaning there will be no photosynthesis once the CO₍ reserves have been exhausted
On jar B the snail needs oxygen to survive. Since the container is covered the oxygen reserves will be depleted and hence the snail deteriorates.
In jar C both the algae and the snail are put together and both remain same and do not deteriorate.
In jar C, the Carbon (iv) oxide exhaled by the snail is used by by the algae in photosynthesis. In return algae gives off oxygen which the snail uses in respiration.
This process continues and both the algae and the snail remain alive as both lives are supported.
Algae is a green plant meaning it has chlorophyll thus can manufacture food in the presence of sunlight.
In the presence of sunlight and chlorophyll, algae manufactures glucose from carbon (iv) oxide and water and gives off oxygen and glucose.
In the jar A the algae deteriorates since there is depletion of CO₂ given that the container is covered meaning there will be no photosynthesis once the CO₍ reserves have been exhausted
On jar B the snail needs oxygen to survive. Since the container is covered the oxygen reserves will be depleted and hence the snail deteriorates.
In jar C both the algae and the snail are put together and both remain same and do not deteriorate.
In jar C, the Carbon (iv) oxide exhaled by the snail is used by by the algae in photosynthesis. In return algae gives off oxygen which the snail uses in respiration.
This process continues and both the algae and the snail remain alive as both lives are supported.
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This is an experiment with photosynthesis. The jar A which contains only algae can survive. The jar B which does not contain algae doesn't survive because there is no photosynthesis occuring there and hence no oxygen is produced in the jar for the snails to survive in the environment. In the jar C which contains both algae and snails, the snails survive because they do photosynthesis, oxygen is produced and hence the snails can respire in the system.
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