Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Aim: To prove that Carbon dioxide is essential for photosynthesis.Apparatus: A potted healthy plant with long and narrow leaves, a wide mouthed glass bottle, split cork.Chemicals: Potassium Hydroxide solution (KOH), vaseline, Iodine solution.Procedure :1) Select a healthy potted plant with long and narrow leaves and keep it in darkness for two or three days so that leaves are free from starch. Take a wide mouthed glass bottle, a cork.2) Take 5-10ml of potassium hydroxide solution into the bottle.3) Close the mouth of the bottle with split cork.4) Early in the morning insert one selected half of the leaf without cutting it from the plant, into the bottle through the split cork.5) The other half of the leaf is outside the cork.6) The bottle is kept air tight by applying vaseline around the rim of the mouth of the bottle.7) Keep this apparatus in sun light for 3-4 hours. After the completion of time, detach the leaf from the plant and take it out of the bottle.8) Test the detached leaf for starch test with iodine solution.Observation : The part of the leaf which is inside the bottle does not turn deep blue, while the basal part of the leaf that is exposed to surroundings prepares starch and turns deep blue.Inference : The potassium Hydroxide absorbs the carbon dioxide present inside the bottle hence the leaf inside the bottle does not turn deep blue, while the basal part of the leaf that is exposed to surroundings prepares starch and turns deep blue.
Conclusion : Green leaves can perform photosynthesis only when Carbon dioxide is available. Hence carbon dioxide is essential for photosynthesis.Precautions :1. The bottle should be kept airtight by applying vaseline around the rim of the mouth of the bottle.2. Make sure that potassium hydroxide does not come in contact with leaf inside the bottle.3. The leaf should not be detached from the plant till the experiment is completed.
EARTHQUAKES An earthquake with its terrible aftereffects is one of the most frightening and destructive phenomena of nature. It can be defined as a sudden movement of
Mechanoreceptors - Receptors Mechanoreceptors involve those receptors involved in perception of touch, pressure, tension, hearing, vibration, gravity, muscle tension etc. Th
Q. What is Lipid-lowering Trial? Aggressive lipid-lowering drug treatment of persons at various risk levels reduces Coronary Artery Disease morbidity and mortality rates and in
What is the gross primary production of an ecosystem? How does GPP relate to photosynthesis? Gross primary production of an ecosystem, or GPP, is the amount of organic material
What sources of water are (a) most likely, (b) least likely to contain pathogenic bacteria? (a) Water most likely to have pathogenic bacteria will be that which receives u
What is the cytoskeleton, and what are three of its main components? The cytoskeleton is a network of long protein strands located in the cytosol. Three main components are
What is the Implant Placement The failure to place an implant in the correct location in the buccolingual plane, mesiodistal plane and the inciso cervical plane results in the
How is an Epithelial cell made?
Q. How is the respiratory system of beings of the phylum Annelida characterized? Respiration in annelids can be branchial or cutaneous. Cutaneous respiration takes place due to
Potassium (K) - Macronutrients The main source of K + for plants comes from withering of K containing minerals. Potassium released by withering dissolves in the soil solution
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd