IB Biology SL 4.2.6 Autotrophs and heterotrophs Question Bank
Practise IB Biology SL 4.2.6 by distinguishing organisms that make organic compounds from those that obtain them.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Distinguish autotrophs from heterotrophs using ecological examples.
- Explain how organisms contribute to carbon transfer in an ecosystem.
C4.2.6—Autotrophs as self-feeders question 1
[Maximum number: 1]
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
All question bank results loaded