Food Supply,plant Growth And Productivity Flashcards

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1
Q

What is food security

A

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

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2
Q

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

A

Leads to a demand for increased food production.

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3
Q

Why must food production be sustainable

A

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

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4
Q

What does agricultural production depend on?

A

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

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5
Q

What is the area to grow crops like

A

It is limited

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6
Q

What does an increase in food production depend on?

A

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.

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7
Q

All food production is dependant on what?

A

All food production is dependant ultimately upon photosynthesis

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8
Q

Examples of plant crops

A

• Cereals
• Potato
• Roots
• legumes

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9
Q

What do breeders seek to develop?

A

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.

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10
Q

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

A

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

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11
Q

Where is livestock production often possible?

A

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

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