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 sympatric and allopatric speciation, Sympatric OR allopatric specia...

Sympatric OR allopatric speciation Sympatry The development of new species within a population. Two Hebe sp living in the same location but with different chromosomal numb

How are living beings divided into two groups?, Q According to the cellular...

Q According to the cellular organization how are living beings divided into two groups? Cellular beings are divided into two groups, unicellular beings and the prokaryotes whos

Explain the barrier function in the cornea, Explain the barrier function in...

Explain the barrier function in the cornea. Barrier Function: It is the first line of barrier between the external environment and the corneal stroma. The superficial epi

Explain the estimation of inorganic phosphorus, Explain the Estimation of I...

Explain the Estimation of Inorganic Phosphorus? Most methods estimating inorganic phosphorus use the reaction between the phosphate and an acid molybdate. The hexavalent molybd

How are fruits formed, How are fruits formed? The fecundation in angios...

How are fruits formed? The fecundation in angiosperms triggers the release of hormones that act upon the ovaries. The ovary wall then makes into a fruit that having the seeds.

Explain taxonomic hierarchy, Taxonomic Hierarchy The sheer complexity o...

Taxonomic Hierarchy The sheer complexity of organisms seems so bewildering that some people believe, life to be unfathomable by the rational mind. Biologists constantly chip aw

Can you describe about mechanical digestion, Q. What is mechanical digestio...

Q. What is mechanical digestion? In molluscs, earthworms, arthropods, birds and vertebrates, in general, which organs respectively participate in this type of digestion? Mechan

What do you mean by pollen, Q. What do you mean by pollen? Pollen grain...

Q. What do you mean by pollen? Pollen grains are the male gametophytes of the phanerogamic (flowering) plants So within the pollen grains the male gametes of these plants are f

Environmental pollution, The earth's environment has been composed in a way...

The earth's environment has been composed in a way which sustains life on this planet. Through on process, the different constituents of the atmosphere are consumed and through the

Causes of noise pollution, 1.      Road traffic:  of all the sources of noi...

1.      Road traffic:  of all the sources of noise pollution, road traffic is the most prevalent and perhaps the most damaging source of pollution. More people are exposed to noise

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