No. An autotroph is something that can produce its own food chemically. A worm needs to physically consume organic compounds to obtain food, therefore they are heterotrophs, just like people.
a consumer eating an autotroph
A potato is an autotroph.
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It is easy to mistake an Earthworm as an autotroph (an organism that synthesizes its own energy from inorganic sources) because it consumes soil and dirt. However, soil actually contains organic matter. By definition, a heterotroph is an organism that consumes organic matter for energy. An earthworm is therefore a heterotroph, not an autotroph.
Autotroph is not a verb and therefore does not have a past tense. Autotroph is a noun.
autotroph, because it creates energy by itself from basic parts, using sun energy and CO2.
kingdom archaebacteria is both heterotroph and autotroph