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

Non migrainous vascular headaches, Non Migrainous Vascular Headaches Th...

Non Migrainous Vascular Headaches This headache associated with dilation of the cranial arteries and can be induced by a wide variety of diseases and conditions. The most commo

Exercises and ambulation for cardiac patients, Exercises and ambulation ...

Exercises and ambulation Continue taking all exercises taught in the hospital. Steam inhalation may be continued. Walk on levelled space first, gradually increase the dista

Getting ready to grow bacteria, Getting ready to grow bacteria Secure t...

Getting ready to grow bacteria Secure two or three dozen shallow glass dishes. The glass coasters used to stay bed castors from marring floors will do. Cut 5 cm squares of wind

Define the high blood plasma levels of progesterone, Z is a healthy adult f...

Z is a healthy adult female who ovulates in each menstrual cycle; Z is not pregnant.  During Z's menstrual cycle, high blood plasma levels of progesterone   A. Occur just prior

Floral induction, Floral Induction The transformation of vegetative ap...

Floral Induction The transformation of vegetative apex into a floral apex is a multifactor and multistep phenomenon. Despite researches on flowering carried out during the las

Haversian canals and the volkmann canals of the bones, Q. What are the Have...

Q. What are the Haversian canals and the Volkmann's canals of the bones? Is the osseous tissue vascularized? The Haversian canals are longitudinal canals present in the osseous

Type of bacterial food poisoning, Type of bacterial food poisoning In...

Type of bacterial food poisoning Infection type: The infection type results from the release of toxin in the bowel by microorganisms taken in foods, e.g., Salmonella or Vibr

Explain thalamus and hypothalamus, Q. Explain Thalamus and Hypothalamus ? ...

Q. Explain Thalamus and Hypothalamus ? Thalamus and Hypothalamus: The thalamus is situated in the forebrain at the uppermost part of the diencephalon (posterior part of the for

Explain the properties or characteristics of dietary fibre, Explain the pro...

Explain the properties or characteristics of dietary fibre? Significant properties / characteristics of dietary fibre that affects its role are: 1) Solubility in water 2)

Define muscular strength component for physical fitness, Define Muscular st...

Define Muscular strength component for physical fitness? It is the ability of a muscle to exert force for a brief period of time. Upper-body strength, for example, can be measu

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