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IB Biology SL C4.2.16 Secondary Production Questions

Calculate animal biomass gain from food intake, then compare feed required for named animal products using secondary-production efficiency in IB Biology SL C4.2.16.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Calculate biomass gain by applying a supplied food-to-biomass or production efficiency to the food intake of a heterotroph.
  • Compare food-conversion ratios to explain how much feed is required to produce a named animal product or edible biomass.

IB Biology SL C4.2.16 Secondary Production Questions question 1

[Maximum number: 2]

The food conversion ratio (FCR) is the ratio between the mass of food given to a farmed animal and its corresponding increase in mass. The first bar chart shows the FCR for four farmed animals. The second bar chart shows the percentage yield of edible meat provided by each whole animal.

Figure for Question IB Biology SL C4.2.16 Secondary Production Questions question 1 — IB Biology SL

Question (a)

(a)

Calculate the increase in mass of a cow given 6 kg of food.

kg

[ 1 ]

Question (b)

(b)

Calculate how much food would be required to produce 20 kg of boar meat.

kg

[ 1 ]
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