IB Biology SL 4.1.6 Saprotrophic Nutrition Question Bank
Practise IB Biology SL 4.1.6 by distinguishing saprotrophs from detritivores and explaining external digestion and nutrient recycling.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Distinguish saprotrophs from detritivores by external digestion and feeding strategy.
- Explain how fungi and other saprotrophs recycle nutrients from dead organic material.
B4.2.6—Saprotrophic nutrition question 1
Dry rot fungus (Serpula lacrymans) secretes digestive enzymes to externally digest dead wood.
What type of nutrition is used by dry rot fungus?
A
Holozoic
B
Saprotrophic
C
Mixotrophic
D
Autotrophic
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