Question 18N.3.SL.TZ0.12
| Date | November 2018 | Marks available | [Maximum mark: 4] | Reference code | 18N.3.SL.TZ0.12 |
| Level | SL | Paper | 3 | Time zone | TZ0 |
| Command term | Calculate, Discuss | Question number | 12 | Adapted from | N/A |
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.
Calculate the increase in mass of a cow given 6 kg of food
[1]
1 kg ✔
Working not required
Calculate how much food would be required to produce 20 kg of boar meat.
[1]
120 kg ✔
Working not required
With reference to the data, discuss the farming of salmon for sustainable food production.
[2]
a. small amount of/least food resources used in production ✔
b. high yield means less energy lost in respiration
OR
high yield means less waste of inedible material ✔
c. other resources/cost of production/nutritional values not mentioned ✔
eg: habitat, heating, water
d. sustainability requires knowledge of the effect on the environment/pollution/contamination of water supply
OR
sustainability requires minimal use of drugs/chemicals/antibiotics ✔
e. example of ethical issue ✔
eg: it may spread diseases to wild population
