2.2 Energy and biomass in ecosystems Quiz
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5 questions, one answer each
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1. Which law explains why energy is lost as heat at each trophic level?
- A. First law of thermodynamics
- B. Second law of thermodynamics
- C. Law of conservation of mass
- D. Law of tolerance
2. GP is 800 and respiration is 300 kJ m⁻² year⁻¹. NP is:
- A. 1,100
- B. 500
- C. 300
- D. 2.7
3. Which pyramid cannot be inverted when measured per unit area per year?
- A. Numbers
- B. Biomass
- C. Energy
- D. None can
4. Biomagnification is:
- A. Build-up in one organism
- B. Increase in concentration along trophic levels
- C. Breakdown of pollutants by bacteria
- D. Dilution of a pollutant in water
5. How is biomass of a sample measured?
- A. Counting individuals
- B. Weighing fresh
- C. Drying and weighing
- D. Measuring height