Photosynthesis, Biology

Assignment Help:

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.

488_Photosynthesis.png


Related Discussions:- Photosynthesis

Chlorocruorins - respiratory pigments, Chlorocruorins - Respiratory Pigment...

Chlorocruorins - Respiratory Pigments These types of respiratory pigments are found in four polychaete families: Sabellidae, Serpulidae, Ampharetidae and Chlorhaemidae. The pi

Why water and electrolytes are important for exercise, Why Water and Electr...

Why Water and Electrolytes are important for exercise? Water and electrolytes are important for exercise performance as they maintain blood volume and osmolality, thermoregulat

Explain magnetic stirrer - food microbiology, Explain Magnetic Stirrer - Fo...

Explain Magnetic Stirrer - Food Microbiology It can be used for mixing ingredients at the time of media or reagents preparation. Mixing happens with spinning of a teflon coat

Explain food applications of dextran, Food Applications Dextran can be ...

Food Applications Dextran can be used in food products, as it is capable of moisture retention and inhibition of crystallization of sugar. The properties of dextran as gelling

What is the main theory opposed to evolution?, What is the main theory oppo...

What is the main theory opposed to evolution? The major theory that opposes the evolution theory on the explanation of how species emerged (phylogenesis) is fixism.

Explain about derived proteins, Derived Proteins These are not naturall...

Derived Proteins These are not naturally occurring proteins and are obtained from simple proteins by the action of enzymes and chemical agents, heat, mechanical shaking, UV or

Define dissection of the aorta, Q. Define Dissection of the Aorta ? The...

Q. Define Dissection of the Aorta ? The CXR may be abnormal in upto 80 per cent of patients. The abnormalities include: i) Widened mediastinum: This is defined as a mediast

Regeneration and its examples, R E GENER A TIO N - Natural ability...

R E GENER A TIO N - Natural ability of living being to replace worn out parts, to repair damaged parts, to regrow cost off organs & to reform entire body from a small piec

Determine the human energy requirements, Determine the Human Energy Require...

Determine the Human Energy Requirements? This unit focuses on the human energy requirements. The nutrient requirement for Indian population, you may recall studying in the last

Name the organism included in symbiotic nitrogen fixation, Name the organis...

Name the organism included in symbiotic nitrogen fixation. What are the components needed for this pure? Determine their role. Differentiate among inbreeding and heterosis. The

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd