... process of photosynthesis. In order for these organisms to achieve Autotrophic nutrition, they must gather together many raw materials from its environment for photosynthesis to occur. Plants require a source of carbon dioxide and water, chlorophyll to collect absorb the light. Oxygen, in plants is a waste product. Many specialised functions help plants and autotrophs survive. Phototropism is an adaptation given by plants as the shoots grow up towards the light and have a rapid elongation of the shoots to get light as fast as it can, known as etiolation. As for Hetrophic nutrition, there are many forms. Holozoic nutrition, is concerned with taking food into their bodies and digest it into smaller molecules. Saprobiontic nutrition involves feeding off the bodies of decaying organisms. Some forms of bacteria and fungi feed in this way. Parasitism is concerned with feeding off other living organisms. All humans feed in holozoic conditions, ...

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