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Aim: To prove that oxygen is evolved during photosynthesis.
Apparatus: Beaker, funnel, test tube, water, Hydrilla plants.Procedure: Take a few pieces of Hydrilla plant. Keep a wide mouthed funnel into a beaker with water. Place the Hydrilla pieces inside the funnel. Carefully invert a test tube filled with water over the narrow end of the funnel. Keep the entire apparatus in sunlight for 2 to 3 hours.Observation: After some time you will observe small gas bubbles coming out of the leaves of Hydrilla. These bubbles collect at the end of the test tube. Collect more gas and then take out of the test tube by closing its mouth with the thumb. Test the gas by introducing glowing splinter. The splinter glows and burns more vigorously.Conclusion: From the above experiment, it is clear that oxygen is evolved during photosynthesis.Precautions:1. See that the twigs of Hydrilla plant are inside the funnel.2. while you are testing for oxygen, see that outside air does not enter test tube.3. For the experiment use only glass funnel and beaker.
How does nondisjunction in meiosis I and meiosis II look in males and females? Diagram it.
Q. What are the main respective constituents of cell walls in bacteria, protists, fungi and plants? In bacteria the cell wall is made of peptidoglycans, amongst protists algae
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Explain Zipping of the Apical Canal a. If the preparation is continued with progressively larger and stiffer file lead to : zipping perforation or tear apical foramen.
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Under fasting conditions, individuals with a deficiency in hepatic glucose 6 phosphatase cannot dephosphorylate glucose 6 phosphate generated from liver glycogenolysis. As a result
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