IB Biology B4.2 Definitions

This page contains our IB Biology definitions for B4.2. By learning each one of these definitions, you will fully cover the content for IB Biology 'Ecological niches'.

All Topic 4 Sub-topics A4.1: Evolution & Speciation (HL)A4.1: Further speciation A4.2: Conservation Of Biodiversity B4.1: Adaptations B4.2: Ecological Niches C4.1: Populations & Communities C4.2: Energy & Matter Transfer D4.1: Natural Selection (HL)D4.1: Further natural selection D4.2: Stability & Change (HL)D4.2: Ecological stability D4.3: Climate Changes (HL)D4.3: Further climate change

Autotrophic nutrition

A form of nutrition reliant on chemical/light energy

Heterotrophic nutrition

A form of nutrition reliant on ingestion of other organic matter.

Mixotrophic nutrition

A form of nutrition where nutrients are obtained by Autotrophic or Heterotrophic methods.

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