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Date November 2019 Marks available 4 Reference code 19N.1.bp.13
Level SL and HL Paper 1 Time zone
Command term Explain Question number 13 Adapted from N/A

Question

The maps show the growth of Lagos, a megacity in Nigeria, from 1984 to 2013.

Using map evidence, identify one factor that has limited the expansion of Lagos towards the west.

[1]
a.i.

Estimate how far (in km) Lagos has grown along the southern part of the lagoon between points X and Y from 1984 to 2013.

[1]
a.ii.

Suggest two social reasons for the rapid growth of a megacity such as Lagos.

[4]
b.

Explain two reasons why the informal economic sector is important in a megacity such as Lagos.

[4]
c.

Markscheme

River

a.i.

25 (allow 21-27)

a.ii.

Award [1] for a valid social reason and [1] for further development.
Do not credit economic reasons.

For example: A high rate of natural increase [1] as fertility rates are high in countries such as Nigeria [1].

Other possible reasons include:

b.

In each case, award [1] for a reason, and [1] for relevant explanation.

For example: The rapid growth of the mega-city/ the scale of the rural-urban migration into Lagos, means that many formal jobs are not available [1] therefore, people must rely on small-scale, labour-intensive activities to survive [1].

Other possibilities include:

c.

Examiners report

[N/A]
a.i.
[N/A]
a.ii.
[N/A]
b.
[N/A]
c.

Syllabus sections

Option G: Urban environments » G.1. The variety of urban environments » G.1.4. The incidence of poverty, deprivation and informal activity in urban areas at varying stages of development
Option G: Urban environments » G.1. The variety of urban environments
Option G: Urban environments

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