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Starch is stored in seeds and other plant parts as a food source. The process of photosynthesis is divided into two parts: the energy‐fixing reaction (also called the light reaction) and the carbon‐fixing reaction (also called the light‐independent reaction, or the dark reaction).
In most plants, leaves are the main place where food is made. In order to do this, there has to be a way to move the water and minerals to the leaf cells doing photosynthesis, and a way to carry the food to other parts of the plant. A lot of water has to be delivered because most of it is lost by evaporation through the stomas.
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Factors affecting the rate of photosynthesis. The term rate always involves time, so the rate of photosynthesis can be considered to be how fast photosynthesis takes place. This can be measured by the amount of glucose produced by a plant over a given time. This topic is especially important to scientist and farmers.
Photosynthesis occurs in green parts of the plant, mostly the leaves, sometimes the green stems and floral buds. The leaves contain specialised cells called mesophyll cells which contain the chloroplast the pigment containing organelle. These are the actual sites for photosynthesis.
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chemiosmosis and an electron transport system—will play a central role in photosynthesis. 1. As a review, define the terms autotroph and heterotroph. Keep in mind that plants have mitochondria and chloroplasts and do both cellular respiration and photosynthesis! Concept 10.1 Photosynthesis converts light energy to the chemical energy of food . 2.
Plants and animals then use the sugars (glucose) for food and energy. Animals also breathe the oxygen gas that is released. Different Chlorophyll Molecules Not all chlorophyll is the same. Several types of chlorophyll can be involved in photosynthesis. You will hear about chlorophyll a and b most often.