*Answer the following questions:*
1. What is photosynthesis ?
2. Name an assimilatory root that takes part in photosynthesis?
3. Name an unicellular animal that takes part in photosynthesis?
4. What is the essential components of photosynthesis?
5. What is carbon assimilation? 6. Write two important roles of Carotenoid .
7. Chlorophyll - a mainly absorb __________ and __________ regions of light spectra.
8.What is photolysis of water?
9. What is photophosphorylation? 10. Write a difference between absorption spectrum and action spectrum.
11. Write down the overall equation of the process photosynthesis. 12. In which place, light and dark reaction of photosynthesis is takes place?
13. What is Hill reagent?
14. Carbon of CO2 of the atmosphere is utilised in the preparation of __________.
15. Name the first stable compound of dark reaction of photosynthesis. 16. Write the full form of the following ones: NADP , ATP , ADP , PGA, RUBP, PGAld, DPGA.
17. Write short note on Calvin cycle.
18. Out of 12 molecules of PGAld is used for synthesis of one molecule of glucose.
1. What is photosynthesis ?
2. Name an assimilatory root that takes part in photosynthesis?
3. Name an unicellular animal that takes part in photosynthesis?
4. What is the essential components of photosynthesis?
5. What is carbon assimilation? 6. Write two important roles of Carotenoid .
7. Chlorophyll - a mainly absorb __________ and __________ regions of light spectra.
8.What is photolysis of water?
9. What is photophosphorylation? 10. Write a difference between absorption spectrum and action spectrum.
11. Write down the overall equation of the process photosynthesis. 12. In which place, light and dark reaction of photosynthesis is takes place?
13. What is Hill reagent?
14. Carbon of CO2 of the atmosphere is utilised in the preparation of __________.
15. Name the first stable compound of dark reaction of photosynthesis. 16. Write the full form of the following ones: NADP , ATP , ADP , PGA, RUBP, PGAld, DPGA.
17. Write short note on Calvin cycle.
18. Out of 12 molecules of PGAld is used for synthesis of one molecule of glucose.
Answers & Comments
Verified answer
Answer:
1. Photosynthesis is the process during which plants synthesize their food in the presence of carbon dioxide and light (trapped by chlorophyll), water.
2. Tinospora
3. Cyanobacteria
4. Water, Carbon Dioxide, Sunlight, Chlorophyll
5. The incorporation of carbon from atmospheric carbon dioxide into organic molecules. This process occurs during photosynthesis.
6. Carotenoids play an important role in biological oxygenation. In plant cells they are involved in the control of trans-membrane transport of molecular oxygen released in photosynthesis. In animals carotenoids play an important role to support oxygen in its transport, storage and metabolism. Carotenoids are a type of accessory pigment, created by plants to help them absorb light energy and convert it to chemical energy. There are two types of carotenoids, xanthophylls and carotenes, which differ only in their oxygen content.
7. Chlorophylls absorb light most strongly in the blue portion of the electromagnetic spectrum as well as the red portion. Conversely, it is a poor absorber of green and near-green portions of the spectrum. Hence chlorophyll-containing tissues appear green because green light, diffusively reflected by structures like cell walls, is less absorbed.
8. Photolysis is the splitting of water molecules in the presence of light into proton, electron and oxygen. It takes place during non-cyclic photophosphorylation. The protons are used to reduce NADP and electrons are fed to photosystem II. Oxygen is released as a waste product.
9. Photophosphorylation is the conversion of ADP to ATP using the energy of sunlight by activation of PSII. This involves the splitting of the water molecule in oxygen and hydrogen protons (H+), a process known as photolysis. Subsequently, a continuous unidirectional flow of electron from water to PSI is performed
10. Absorption spectrum deals with wavelengths of light absorbed by each pigment whereas the action spectrum indicates the overall rate of photosynthesis at each wavelength of light.
11. The process of photosynthesis is carbon dioxide + water —> glucose + oxygen + water. A balanced chemical equation for the process can be written as 6CO2 + 6H2O —> C6H12O6 + 6O2. Overall,photosynthesis uses light energy to convert carbon dioxide into a carbohydrate
12. Stroma of the chloroplast
13. Discovered in 1937 by Robin Hill, Hill reagents allowed the discovery of electron transport chains during photosynthesis. These are dyes that act as artificial electron acceptors, changing color when they are reduced. An example of a Hill reagent is 2,6-dichlorophelindophenol (DCPIP).
14. Glucose
15. 4-carbon compound
16.
17. The Calvin cycle, light-independent reactions, biosynthetic phase, dark reactions, or photosynthetic carbon reduction (PCR) cycle of photosynthesis are the chemical reactions that convert carbon dioxide and hydrogen-carrier compounds into glucose.
18. True?
Explanation: