Briefly describe what happen during photosynthesis
Answers
Explanation:
Photosynthesis is the process by which plants and other things make food.[1] It is an endothermic (takes in heat) chemical process that uses sunlight to turn carbon dioxide into sugars that the cell can use as energy. As well as plants, many kinds of algae, protists and bacteria use it to get food. Photosynthesis is very important for life on Earth. Most plants including coral either directly or indirectly depend on it. The exception are certain organisms that directly get their energy from chemical reactions; these organisms are called chemoautotrophs.
Photosynthesis can happen in different ways, but there are some parts that are common.
6 CO2(g) + 6 H2O + photons → C6H12O6(aq) + 6 O2(g)
carbon dioxide + water + light energy → glucose + oxygen
The carbon dioxide enters the leaf through the stomata by Diffusion from the atmosphere.
The water is absorbed from the soil by root hair cells, which have an increased surface area for an increased uptake of water.
Photosynthesis occurs in the Chloroplast (found in leaf cells) and contain Chlorophyll, the green pigment that absorbs light energy.
Palisade cell has numerous chloroplasts to maximise the absorption of light.
Oxygen is a waste product: it is used for respiration or diffuses back out of the leaf through the stomata.
Glucose is used for respiration (to release energy in cells). It is stored in the form of starch (which is converted back to glucose for respiration in the dark). Glucose can also be converted into other compounds for growth and reproduction e.g. cellulose, nectar, fructose, amino acids and fats.