IB Biology SL B4.2.6 Saprotrophic Nutrition Questions

Explore how fungi and bacteria digest dead organic matter outside the body, absorb soluble products and return inorganic nutrients to ecosystems in IB Biology SL B4.2.6.

Exam points

Identify saprotrophs by enzyme secretion onto dead matter and absorption of digestion products.
Compare saprotrophs and detritivores by external digestion versus ingestion and internal digestion.
Interpret fungal nutrition charts and food webs to identify saprotrophic feeding roles.

[Maximum number: 1]

What is a difference between detritivores and saprotrophs?

Detritivores

Saprotrophs

Feed on living organic matter

Feed on dead organic matter

Autotrophic

Heterotrophic

Ingest organic matter and then digest it

Digest organic matter and then absorb it

Include fungi and bacteria

Include plants and animals

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IB Biology SL B4.2.6 Saprotrophic Nutrition Questions question 1