IB Biology HL C4.2.8 Heterotrophs Questions

Compare how consumers, detritivores and saprotrophs obtain organic carbon, digest it and use it for respiration or biomass synthesis in IB Biology HL C4.2.8.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Classify heterotrophs as obtaining organic carbon from other organisms or organic matter and use pangolin, spider, Paramecium or saprotroph examples to justify the classification.
  • Compare heterotrophic feeding strategies by linking consumed or dead organic matter, internal or external digestion and subsequent respiration or biomass synthesis to ATP production.

IB Biology HL C4.2.8 Heterotrophs Questions question 1

[Maximum number: 1]

The Chinese pangolin (Manis pentadactyla) is a critically endangered species that has declined in numbers by 80 % since 2000 . It inhabits both forest and grassland, where it uses long, powerful claws to open ant and termite nests and ingests the insects using a long, sticky tongue.

Figure for Question IB Biology HL C4.2.8 Heterotrophs Questions question 1 — IB Biology HL

State with a reason whether pangolins are autotrophic or heterotrophic.

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