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Green plants, in fact, have to make or rather synthesise the food they need and all other organisms depend on them for their needs. Green plants carry out ‘photosynthesis’, a physico-chemical process by which they use light energy to drive the synthesis of organic compounds.
PHOTOSYNTHESIS: • converts light energy to the chemical energy of food 6CO2 + 6H2O + light energy C6H12O6 + 6O2. Happens in all green parts of plants but leaves = major site ~ about half a million chloroplasts/mm2 of leaf surface. Color of leaf due to green pigment chlorophyll.
photosynthesis. If you carefully observe a cross-section of a leaf under the microscope (shown in Fig. 5.1), you will notice that some cells contain green dots. These green dots are cell organelles called chloroplasts which contain chlorophyll. Let us do an activity which demonstrates that chlorophyll is essential for photosynthesis. 2024-25
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water. This glucose can be converted into pyruvate which releases adenosine triphosphate (ATP) by cellular respiration. Oxygen is also formed.
3 sie 2023 · Photosynthesis is a light-driven oxidation-reduction reaction where the energy from the light is used to oxidize water, releasing oxygen gas and hydrogen ions, followed by the transfer of electrons to carbon dioxide, reducing it to organic molecules.
Chapter 10: Photosynthesis. 1. What are autotrophs and heterotrophs? Autotrophs are “self-feeders”; they sustain themselves without eating anything derived from other living beings. Heterotrophs obtain their organic material by living on compounds produced by other organisms. 3. Write out the formula for photosynthesis.
7 kwi 2023 · Photosynthesis requires carbon dioxide, sunlight, water and chlorophyll. It occurs in leaves through light and dark reactions. In light reactions, sunlight is absorbed by chlorophyll which drives the production of ATP and NADPH using water.
