We explain what an autotrophic being and a heterotrophic being is. What does this classification of living beings imply? Examples of autotrophs.
When we talk about autotrophic organisms or autotrophic nutrition, we always refer to a classification of living beings based on their ability to obtain energy . This classification distinguishes them into two groups:
In this way, an autotrophic being is one who does not need other living beings to nourish himself , but synthesizes from inorganic substances everything he needs for his metabolism . Put more simply: they are beings that make their own food .
There are two major autotrophic methods of nutrition : photosynthetic and chemosynthetic. The former take advantage of the water and energy of sunlight to break the molecule of carbon dioxide (CO 2 ) from the surrounding air , and thus obtain energy. The latter, on the other hand, do so by oxidizing inorganic chemicals such as sulfur dioxide or various iron-rich compounds. The former are known as photolithotrophic beings , and the latter as chemolithotrophic beings .
Obviously, the autotrophic beings represent the first step in the whole trophic cycles or food chains , since they constitute the producing link, that is, the one that takes the raw material directly from the environment. And they are the ones who provide organic matter to heterotrophic
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