Which organisms are both heterotrophic and autotrophic

euglena gracilis could be considered on.

Explanation:

Some unicellular organisms are both heterotrophic and autotrophic, they are actually called mixotrophic.

OK SO There are some unicellular organisms that carry out both heterotrophic and autotrophic nutrition, meaning they are mixotrophic. Such is the case of euglena gracilis (below), which carries out photosynthesis in its chloroplasts as well as also feeding on detritus or smaller organisms by endocytosis.The pitcher plant has both autotrophic and heterotrophic mode of nutrition. The pitcher plant performs photosynthesis which makes it an autotrophic plant but it has also a partial heterotrophic mode of nutrition because pitcher plant grows on nitrogen deficient soil.

hope this helps

Explanation:

1. is geographic distribution

2 is increasing complexity

3 is transitional forms