Question

The diagram alongside shows two test tubes $A$ and $B$. Test tube $A$ contains a green water plant. Test tube $B$ contains both, a green water plant and a snail. Both test tubes are kept in sunlight. Answer the questions that follows.

(ii) Explain the physiological process as mentioned above in (i).

Answer 1

• The physiological process that releases the bubbles of oxygen is photosynthesis.
  
• It is a physiological process by which chlorophyll bearing cells of the plant prepare glucose in the presence of sunlight using $C{O}_2$ and water.
  
• $O_2$ is released as byproduct during the process.