What in the structure of euglena green testifies to its ability to both heterotrophic and autotrophic nutrition?
| June 21, 2021 | education
Signs of autotrophic nutrition: a light-sensitive eye (stigma) to move towards the light, which is needed for photosynthesis, chloroplasts are also present.
Signs of heterotrophic nutrition: There is a cellular mouth and digestive vacuoles to capture and digest food particles.
In general, green euglena is the simplest autotroph that receives energy from photosynthesis. However, with prolonged absence of light, chlorophyll begins to discolor, and the cell is no longer capable of photosynthesis, therefore, it switches to heterotrophic nutrition. Upon further exposure to light, chlorophyll is restored, and euglena again becomes an autotroph.
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