Food Supply,plant Growth And Productivity

Question 1

What is food security

Answer 1

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

Question 2

What does the increase in human population and concern for food security lead to

Answer 2

Leads to a demand for increased food production.

Question 3

Why must food production be sustainable

Answer 3

Food production must be sustainable and not degrade the natural resources on which agriculture depends

Question 4

What does agricultural production depend on?

Answer 4

Agricultural production depends on factors that control photosynthesis and plant growth.

Question 5

What is the area to grow crops like

Answer 5

It is limited

Question 6

What does an increase in food production depend on?

Answer 6

An increase in food production will depend on factors that control plant growth.-:
- Breeding of higher yielding cultivars.
- use of fertiliser.
- protecting crops from pests.
- diseases and competition.

Question 7

All food production is dependant on what?

Answer 7

All food production is dependant ultimately upon photosynthesis

Question 8

Examples of plant crops

Answer 8

• Cereals
• Potato
• Roots
• legumes

Question 9

What do breeders seek to develop?

Answer 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 those that can thrive in particular environmental conditions.

Question 10

Why do livestock produce less food per unit area than crop plants?

Answer 10

Livestock produce less food per unit area than crop plants due to loss of energy between trophic levels.

Question 11

Where is livestock production often possible?

Answer 11

Livestock production is often possible in habitats unsuitable for growing crops.