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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.
What is the main theory opposed to evolution? The major theory that opposes the evolution theory on the description of how species emerged (phylogenesis) is fixism.
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Which one of the following statements about morula in humans is correct? 1. It has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA 2. It has far l
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1. In modern blimps, the gas of choice used to inflate them is helium rather than hydrogen. Hydrogen would be lighter, but helium is safer. Compare and contrast the atomic structur
Does glycolysis occur within the mitochondria? Glycolysis occurs in the cytosol and not within the mitochondria. Pyruvic acid molecules later enter mitochondria to participate
Homology indicates similarity between the two different nucleotide or the amino acid sequences, generally with potential evolutionary importance. It is probably better to use more
phylogenetic consideration
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