3b.3 - Managing food production Flashcards
1
Q
How can efficiency of food production be improved? (2)
A
- Reduces number of stages in food chain
- Restricting energy loss by farm animals
- Developing new food sourced like mycoprotein
2
Q
Why is reducing the number of stages in the food chain more efficient? (2)
A
- Less energy and biomass as you move up the food chain
- Produce more food growing crops than having grazing animals
3
Q
Why is restricting the energy lost by farm animals more efficient? (2)
A
- Animals are kept close together indoors
- Animals grow faster on less food as not wasting on heat and movement
4
Q
What is mycoprotein?
A
Fungi
5
Q
How is mycoprotein made? (4)
A
- Fusarium is grown in a fermenter using glucose syrup as food
- Fungus respires aerobically
- Fermenter originally steralised
- Harvester and purified
6
Q
What are the advantages of mycoprotein? (5)
A
- Les reliant on livestock
- Source of protein
- Efficient
- Grow quickly with little space
- Feed on waste material
7
Q
What are disadvantages of intensively farming? (5)
A
- Cruel
- Spread of disease
- Antibiotics less effective on humans as they develop immunity in animals
- Need to be kept warm
- Fish stocks are low yet animals are fed them
8
Q
How does food distribution cause problems? (3)
A
- Have to be transported a long way
- Transport is expensive and bad environmentally
- Planes, ships and trucks burn fossil fuels
9
Q
What are the fishing quotas? (2)
A
- Limits on the number and size of fish that are caught in certain areas
- Prevent species from being overfished
10
Q
How can fish stocks be maintained? (2)
A
Fishing quotas and net size
11
Q
How does net size save fish? (3)
A
- Limits on size of net
- Reduces number of unwanted fish
- Younger fish can fit through net
