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unicellular autotroph

An organism capable of synthesizing its own food from inorganic substances using light or chemical energy. Green plants, algae, and certain bacteria are autotrophs.

Autotrophs

Autotrophs (also called producers) can form their own food either by using sunlight and photosynthesis (phototrophs) or by obtaining chemical energy through oxidation (chemotrophs). For the most part, autotrophs often make their own food by using sunlight, carbon dioxide, and water to form sugars which they can use for energy. Some examples of autotrophs include plants, algae, and even some bacteria.

Chemoautotrophs

Chemoautotrophs get their energy from chemicals, mainly inorganic substances such as hydrogen sulfide and ammonia. Inorganic substances are those that are not from biological sources, and they do not contain carbon as a main element. Chemoautotrophs are able to survive in very harsh environmental conditions because the only source of carbon they need is carbon dioxide.

consumers

Heterotrophs who cannot make their own food.

Photoautotrophs

Photoautotrophs get their energy from sunlight and convert it into usable energy (sugar). This process is called photosynthesis. During the process of photosynthesis, not only is sunlight turned into energy, but carbon dioxide is taken from the air and oxygen is released in its place

autotrophs.

Some organisms are actually able to survive by making their own food. These organisms are called autotrophs. Autotrophs are also called 'self-feeders' and they are able to produce energy from sunlight and carbon dioxide and are therefore known as 'producers.' The only autotrophs that we know of are plants and some types of algae. This makes all other organisms heterotrophs.

multicellular heterotroph

The multicellular organisms which cannot make there own food are called heterotroph or heterotrophic organisms

unicellular heterotroph

n organism that cannot manufacture its own food and instead obtains its food and energy by taking in organic substances, usually plant or animal matter. All animals, protozoans, fungi, and most bacteria are heterotrophs. Compare autotroph.