Identify autotrophs as producers that use light or chemical energy to synthesize organic compounds from inorganic substances, making carbon available to consumers in IB Biology SL C4.2.6.
Food chains combine to form food webs in an ecosystem.
Define the term autotroph.
uses light/external sources (chemicals) as an energy source to make complex
carbon/organic compounds (from simple/inorganic molecules);
Marking guidance:
Do not award a mark if it is clear candidates are referring to organic "food" being used as an energy source.
Do not award a mark if the definition refers to making food alone, a reference to complex carbon/organic compounds is needed.
Accept OWTTE