IB Biology SL 4.2.15 Gross and net production Question Bank

Practise IB Biology SL 4.2.15 by calculating production and comparing photosynthetic output in ecosystems.

Exam points

Distinguish gross production from net production.
Calculate or interpret production data for changing depth, season or climate.

[Maximum number: 1]

Calculate the gross production of an aquatic ecosystem that has a net primary production of $96 \mathrm{~kJ} \mathrm{~m}^{-2} \mathrm{y}^{-1}$ and a respiration rate of $45 \mathrm{~kJ} \mathrm{~m}^{-2} \mathrm{y}^{-1}$ , giving the units.

$\quad(=96+45)=141 \mathrm{~kJ} \mathrm{~m}^{-2} \mathrm{yr}^{-1}$ (units required)

All question bank results loaded

C4.2.15—Primary production question 1