Which is an autotroph?

Question 4 options:

alga

mushroom

sparrow

wolf

Answer: Algae

Because an autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.

alga

Explanation:

An autotroph is an organism that able to produces food (organic compounds) for itself using the light energy or inorganic chemical reactions. Autotroph is always considered as primary producer in a food chain. Example of autotroph includes plants and alga.

In more details, algae can produce energy food for themselves using sunlight, carbon dioxide, water, chlorophy and oxygen.