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

Define consistency and texture - dysphilgia, Define Consistency and Texture...

Define Consistency and Texture - Dysphilgia? Aspiration of liquids, including water, into the lungs can result in complications. To avoid this problem and yet fulfilling the fl

Saturated fatty acids, Saturated Fatty Acids - These are solid at ro...

Saturated Fatty Acids - These are solid at room temperature. These are metabolically less active so have a tendency to deposit in the body (synthesized in body) These

Ripening bananas, you tested three different treatments for ripening banana...

you tested three different treatments for ripening bananas. Before you did the lab, which one did you think would have ripened most? State your hypothesis and explain your reason

Describe ecosystem diversity, Q. Describe Ecosystem Diversity? Ecosyste...

Q. Describe Ecosystem Diversity? Ecosystem diversity means the variation between different types of ecosystems. Different species of animals, plants and micro-organisms interac

Define cause of vitamin a deficiency - poverty and ignorance, Define cause ...

Define cause of vitamin a deficiency - Poverty and ignorance? Low purchasing power of the communities and their consequent inability to meet the nutrient requirements and tradi

Post-operative care of teeth, Post-operative care of teeth After implan...

Post-operative care of teeth After implant surgery, patients should be warned to expect:  Some swelling and possibly bruising.  Some discomfort which can usually be contr

, comparitive table to explain the differences between the animals in chor...

comparitive table to explain the differences between the animals in chordate classes

Nutrition, nutrition in paramecium

nutrition in paramecium

Definition of somatoform disorders, Definition of Somatoform Disorders: ...

Definition of Somatoform Disorders: The term 'Somatoform Disorders' was introduced in the scientific literature by the American Psychiatric Association in the  third edition o

Definition of osseointegration in microscopic biology, Q. Definition of Oss...

Q. Definition of Osseointegration in microscopic biology? From a view point of macro and microscopic biology and medicine. Osseointegration of a fixture in bone is defined as t

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