The process of photosynthesis occurs in two phases – the light reactions and the dark reactions.. Light reactions – As the name suggests, this reaction takes place in the presence of light. Report ; Out of this only 2.2 x 10 13 tonnes are present in the atmosphere @ 0.03%. CO2, water, light, and chlorophyll are the raw materials for photosynthesis. The total carbon dioxide available to plants for photosynthesis is about 11.2 x 10 14 tonnes. Answer of Write the Mechanism of Photosynthesis. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds. Light reaction is the first stage of photosynthesis process in which solar energy is converted into chemical energy in the form of ATP and NADPH. Phloem transports soluble products of photosynthesis, amino acids, and other substances. In this page, you can find CBSE Class 10 Science Chapter 6 Extra Questions and Answers Life Processes Pdf free download, NCERT Extra Questions for Class 10 Science will make your practice complete. ICSE Solutions for Class 10 Biology – Photosynthesis. Mechanism of photosynthesis Report ; Posted by Dr. Jasmine Kaur 10 months, 2 weeks ago. of O 2. The other three factors do not play a critical role in it. The process of light reaction is given below- Magnitude of Photosynthesis: Only 0.2% of light energy falling on earth is utilized by photosynthetic organisms. Answer: (i) That light is necessary for photosynthesis. Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. But, in case of light dependent reaction or light reaction of photosynthesis, it is most influenced by presence or absence of light. In the process of photosynthesis, the carbohydrates are synthesized from CO2 & H2O in presence of sunlight & chlorophyll and O2 is released. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. The protein complexes and the pigment molecules help in the production of NADPH and ATP. Thank u 1 Thank You ... Write the electronic bond of Mgcl2. Best Answer. The translocation takes place in the sieve tubes with the help of adjacent companion cells. Light energy is absorbed by chlorophyll molecules and is utilized for splitting water molecules into hydrogen and oxygen. (iii) (1) To kill the cells. (iii) Hence quantum yield = 1 /8 = 0.125 (i.e., a fraction of 1) as 12%. ... Write a balanced chemical equation to represent the process of photosynthesis. 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