1 Fig. 1.1 shows a type of fence commonly used on farms. (a) Name the type of fence shown in Fig. 1.1. [1] (b) State two purposes of using this type of fenc...

Labelled answer diagram:

(a) The type of fence shown is a barbed wire fence. [1]

(b) Two purposes of this fence on a farm:

1. To contain livestock within a field or paddock, preventing them from straying. [1]
2. To mark farm boundaries, clearly defining the extent of the farmer's land. [1]

Other acceptable answers: to divide pastures into paddocks for rotational grazing; to protect crops from animal damage.

(c)

Advantage: Barbed wire is relatively cheap to install and can cover large areas quickly, making it cost-effective for fencing extensive grazing land. [1]

Disadvantage: It can injure animals that push against it or become entangled, causing cuts and wounds that may become infected. [1]

Other advantages: effective at containing cattle; durable in dry climates. Other disadvantages: difficult to see in poor light; requires regular maintenance to keep wire tension; not suitable for containing small animals.

(d) Two materials needed:

1. Barbed wire (the strands that form the barrier). [1]
2. Fence posts (wooden or metal posts driven into the ground to support the wire). [1]

Other acceptable materials: staples (to attach wire to wooden posts), strainer posts, droppers.

(e) This fence would not be suitable for enclosing poultry because the gaps between the wire strands are too wide, and poultry (being small birds) can easily pass through them. [1] A mesh fence with much smaller openings would be needed.