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In most plants, the leaves contain the most chloroplasts and are the major sites of photosynthesis. Within a leaf, the chloroplasts are concentrated in the cells of the mesophyll, the inner layer of tissue (Figure 8-2).Figure 8-2Photosynthesis takes place in cellular organelles called chloroplasts. In this sunflower, the greatest numbers of chloroplasts are located in the leaves.ithin a leaf, the chloroplasts are concentrated in the cells of the mesophyll, the inner layer of tissue (Figure 8-2). Figure 8-2Photosynthesis takes place in cellular organelles called chloroplasts.
Chloroplast is an organelle found in plants and algae cells where photosynthesis occurs. The chloroplast contains chlorophyll which is the light sensitive pigment that power â¦ s photosynthesis and other pigments. Chlorophyll gives the plant its green colour.A plastid containing chlorophyll, developed only in cells exposed to the light.n animals chloroplasts occur only in certain low forms.  Chloroplasts are what give plants their green color.  Organelle that makes sugars, using carbon dioxide, water, and the energy from sunlight. Cholorplasts can be found in plant cells and produces food.