Essential for photosynthesis, Biology

Assignment Help:

Aim : To prove that light is essential for photosynthesis.
Apparatus : A potted plant, a light screen, beaker, iodine solution.
Procedure : Keep a potted plant in darkness for two days to make us sure that the leaves are free from starch. Attach a light screen to one of the leaves. The light screen holds the leaf by a lid. The lid has a cut design like a star water the plant and keep it in sunlight for 4 or 5 hours keep in mind that the leaf with light screen receives sunlight on the leaf through the cut design in the lid.
Then detach the leaf from the plant and remove light screen. Test the leaf for starch using iodine solution.
Observation : You will see blue colour only in the area which received the sunlight. This area resembles the cut design on the lid of the light screen. Rest of leaf is colourless.
Inference : In blue coloured portion only carbohydrates are present. That means the part of the leaf which received sunlight performed photosynthesis. Rest of the leaf remained colourless due to non-performance of photosynthesis. 

Conclusion : From the above experiment, it is clear that light is essential for photosynthesis.
Precautions : The potted plant should be kept in darkness for two days or three days.

595_essential for photosynthesis.png


Related Discussions:- Essential for photosynthesis

Explain changes in body tissue compartments - underweight, Explain the Chan...

Explain the Changes in Body Tissue Compartments - Underweight? The severity of nutritional deprivation determines the extent of changes in the body tissue compartments. The fir

Spermatogonia - spermatozoa, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4 Spermatogonia - Spe

Who created the two-part naming system used in biology, Who created the two...

Who created the two-part naming system used in biology? The scientific naming system that is used worldwide today was primary devised by Swedish naturalist Carl Linnaeus in 173

Determine the term memory - psychological tests, Determine the term Memory ...

Determine the term Memory - Psychological tests The acquisition, reaction, and retrieval of new information is a domain of much importance in infants and young children at risk

Explain in detail about the optic nerve, Explain in detail about the optic ...

Explain in detail about the optic nerve The optic nerve contains more than one million axons that initiate in the ganglion cell layer of the retina. This structure originatcs a

Does ploidy reduction occur in mitosis, During which meiosis division does ...

During which meiosis division does ploidy reduction occur? Does ploidy reduction occur in mitosis? In the cell division by meiosis ploidy reduction occurs in meiosis II. Initia

Which is the other adnexal gland of the digestive system, Besides the liver...

Besides the liver which is the other adnexal gland of the digestive system that releases substances in the duodenum participating in extracellular digestion? The other adnexal

Zoonoses disease-plague, Plague Plague is an acute and highly fatal di...

Plague Plague is an acute and highly fatal disease caused by Yersinia pestis and transmitted by the bite of infected rat fleas. It is primarily a disease of rodents and small

Historical example for scaling from individual to ecosystems, Define Histor...

Define Historical example for scaling from individual to ecosystems? Biological oceanographers have long utilized physiologically based models like the Droop model, which reduc

What is mendels crosses in genetics explain breifly, What is Mendel's Cross...

What is Mendel's Crosses in genetics explain breifly? Mendel found that if he transferred pollen from a green-seed strain to a yellow-seed strain and vice versa, in a process c

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