Gce Model Questions Vol1 2017 Geography Question 10

The following description summarises the main vegetation types found across three contrasting Nigerian ecological zones: Zone A – Sahelian savanna: Annual rainfall 400‑600 mm, mean temperature 28‑34 °C. Dominant vegetation consists of scattered drought‑tolerant trees (e.g., Acacia spp.) and an understory of short, perennial grasses. Zone B – Guinea forest: Annual rainfall 1 500‑2 000 mm, mean temperature 22‑28 °C. The area is characterised by dense, multi‑stratal evergreen forest with a rich understory of shade‑tolerant shrubs and ferns. Zone C – Mangrove swamp (coastal): Annual rainfall 2 200‑2 500 mm, mean temperature 24‑30 °C. Vegetation is dominated by mangrove species (Rhizophora spp., Avicennia spp.) forming a dense fringe along tidal waterways, with a soft, water‑logged substrate. Using the information above, answer the following: