Question

Two examples of modes of nutrition

Answer 1

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Autotrophs

Synthesises its own organic molecules from simple inorganic substances (e.g. CO2, nitrates)

Energy for this process is derived from sunlight (photosynthesis) or via the oxidation of inorganic molecules (chemosynthesis)

Because autotrophs synthesise their own organic molecules they are commonly referred to as producers

Heterotrophs

Obtains organic molecules from other organisms (either living / recently killed or their non-living remains and detritus)

Because heterotrophs cannot produce their own organic molecules and obtain it from other sources, they are called consumers

Answer 2

Answer:

Autotrophic – Plants exhibit autotrophic nutrition and are called as a primary producer. ...

Heterotrophic – Both animals and human beings are called heterotrophs, as they depend on plants for their food.