Food supply, plant growth and productivity - Learning outcomes/ questions

Question 1

Food security is what?

Answer 1

Food security is the ability of human populations to access food of sufficient quality and quantity.

Question 2

Increase in human population and concern for food security leads to what?

Answer 2

a demand for increased food production.

Question 3

Food production must be what?

Answer 3

sustainable and not degrade the natural resources on which agriculture depends.

Question 4

Agricultural production depends on what?

Answer 4

factors that control photosynthesis and plant growth.

Question 5

The area to grow crops is what?

Answer 5

limited

Question 6

Increased food production will depend on factors that control plant growth. What are they?

Answer 6

breeding of higher yielding cultivars, use of fertiliser, protecting crops from pests, diseases and competition.

Question 7

All food production is dependent ultimately upon what?

Answer 7

photosynthesis.

Question 8

Plant crop examples include what?

Answer 8

cereals, potato, roots and legumes.

Question 9

Breeders seek to develop crops with higher nutritional values, resistance to pests and diseases, physical characteristics suited to rearing and harvesting as well as what?

Answer 9

those that can thrive in particular environmental conditions.

Question 10

Livestock produce less food per unit what?

Answer 10

area than crop plants due to loss of energy between trophic levels.

Question 11

Livestock production is often possible in what?

Answer 11

habitats unsuitable for growing crops.