Question

draw a neat labelled diagram of the experiment set 1. upto show that green plants give out oxygen during photosynthesis 2. mention any two adaptation found in plants to favour the process of photosynthesis​

Answer 1

flower and leaves are a photosynthesis on favour

Answer 2

Oxygen is evolved during photosynthesis

Explanation:

• The experimental setup is shown as in the image attached. The beaker has been filled with water and the plant base ( like hydrilla plant) is cut and placed such that the cut ends are towards the neck of the funnel. The set up is placed in daylight.
• After a while, bubbles are seen evolving from plant and get accumulated in the test tube. A glowing splinter of wood is thrust into the test tube and the a flame is seen burning due to reaction of the gas bubbles in the test tube .
• Oxygen has a property of not burning itself but flaming the glowing splinter. Therefore it can be established that the gas is oxygen.
• Two adaptation found in plants to favor the process of photosynthesis​ are larger surface area of leaves that increase the amount of chlorophyll and hence increase photosynthesis. Also , more stomata on leaves favors photosynthesis.
• In most plants , orientation of leaves is another factor that helps in photosynthesis.