JAMB 2017 Biology · Question 33

The biome that is characterized with large herbivores, few and scattered fire resistant trees is

Options

  1. A.savanna
  2. B.tropical rain forest
  3. C.montane forest
  4. 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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