JAMB 2017 Biology · Question 33
The biome that is characterized with large herbivores, few and scattered fire resistant trees is
Options
- A.savanna
- B.tropical rain forest
- C.montane forest
- D.desert
Answer: A. savanna
Explanation written with AI and checked against the answer key
Step 1: Analyze the question We need the biome with three features: large herbivores, few and scattered trees, and fire-resistant trees.
Step 2: Explain the concept A biome is a large ecological region defined by its climate, vegetation, and animal life. Let's compare the options:
- Savanna (tropical grassland): Has a distinct wet and dry season. Grasses dominate, with scattered trees such as acacia and baobab. The dry season brings frequent fires, so the trees have thick, fire-resistant bark. It supports large grazing herbivores such as zebras, antelopes, elephants, giraffes, and buffalo. This is the Guinea and Sudan savanna belt of northern Nigeria.
- Tropical rain forest: Has dense, tall trees in several layers, high rainfall, and little fire. This doesn't match the description.
- Montane forest: Found at high altitudes, with cool, misty conditions and dense forest vegetation. It doesn't have scattered trees or many large grazers.
- Desert: Has very little rainfall and sparse vegetation made up of cacti and xerophytes. It has few large herbivores, and fire isn't a major factor.
Step 3: Match the features
- Large herbivores → savanna ✔
- Few, scattered trees → savanna ✔
- Fire-resistant trees → savanna ✔ (annual dry-season fires)
Step 4: Answer The correct option is A. savanna.
Tip: Link keywords to biomes. "Scattered trees + grass + fire + large grazers" means savanna. "Dense, tall, multi-layered" means rain forest. "Cacti and very low rainfall" means desert.
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