U3 KA5: Food Production Flashcards
1
Q
What do Fertilisers do?
A
- provide crops with chemicals such as nitrates which increase crop yield.
2
Q
What do Pesticides do?
A
- ensures pests do not reduce crop yield by feeding on and damaging the crops.
3
Q
What do nitrates dissolved in water do?
A
- absorb into plants.
4
Q
What are Nitrates used to do?
A
- produce Amino Acids which are synthesised into plant proteins.
5
Q
What chemical adds Nitrates to the soil?
A
- fertilisers.
6
Q
What happens when fertilisers leach into water.
A
- a thick layer of algae forms at the surface.
- plants die due to lack of sunlight.
- oxygen levels decrease due to a lack of photosynthesis.
- algae dies, increasing bacteria numbers.
- oxygen level decreases killing marine animals.
7
Q
What type of crop can be used to reduce risk of fertilisers leaching?
A
- GM crops.
8
Q
What can be used as an alternative to pesticides?
A
- biological control.
