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IB Biology HL C4.2.6 Autotrophs As Self Feeders Questions

Autotrophs synthesize carbon compounds from simple inorganic substances, using an external energy source to fix carbon and build biomass. In IB Biology HL C4.2.6, practise classifying autotrophs and identifying dissolved carbon dioxide and hydrogen carbonate ions as carbon sources in aquatic ecosystems.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Classify an organism that synthesizes organic compounds from inorganic nutrients as an autotroph.
  • Identify dissolved carbon dioxide and hydrogen carbonate ions as carbon sources that aquatic autotrophs can use.

IB Biology HL C4.2.6 Autotrophs As Self Feeders Questions question 1

[Maximum number: 1]

What is the classification of an organism that is able to make organic compounds from inorganic nutrients?

A

Autotroph

B

Consumer

C

Detritivore

D

Saprotroph

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