Question

Difficulty: MediumBiomes and Aquatic/Terrestrial Habitats

Match each Nigerian biome or habitat on the left with its corresponding vegetative characteristic or indicator adaptation on the right.

  • Tropical RainforestDense multi-layered canopy, buttress roots, and abundant epiphytes
  • Mangrove SwampRespiratory pneumatophores, stilt roots, and high salt tolerance
  • Southern Guinea SavannaTall grasses interpersed with deciduous broad-leaved trees like Daniellia oliveri
  • Sahel SavannaSparse vegetation dominated by thorny acacias, short grasses, and drought resistance

Answer

Tropical Rainforest matches dense multi-layered canopy, buttress roots, and abundant epiphytes; Mangrove Swamp matches respiratory pneumatophores, stilt roots, and high salt tolerance; Southern Guinea Savanna matches tall grasses interspersed with deciduous broad-leaved trees; Sahel Savanna matches sparse vegetation dominated by thorny acacias and short grasses.
Each biome matches its characteristic indicator flora and physical adaptation to local environmental factors such as rainfall, soil aeration, and salinity.

Step-by-Step Solution

1
Analyze coastal and forested biome structural adaptations.
Mangrove habitats require aeration and anchoring in muddy saline water (pneumatophores and stilt roots), whereas tropical rainforest plants compete for light in dense, multi-layered forest canopies.
Environmental stressors like soil anoxia dictate specialized root modifications in intertidal biomes.
2
Compare vegetation profiles along the savanna moisture gradient in Nigeria.
Southern Guinea Savanna has higher annual rainfall supporting tall grass and deciduous trees, whereas Sahel Savanna experiences severe dry conditions favoring xerophytic thorny plants.
Precipitation steadily decreases moving northward across West Africa, altering plant morphology and community structure.

Key Concept

Biome Characteristics and Morphological Adaptations
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