JAMB 2022 Biology · Question 14

In Nigeria, Southern Guinea Savanna is found in?

Options

  1. A.Borno and Sokoto
  2. B.Kogi and Kwara
  3. C.Kaduna and Cross River
  4. D.Kano and Niger

Answer: B. Kogi and Kwara

Explanation written with AI and checked against the answer key

Analyze the question: You're being asked which pair of states lies in the Southern Guinea Savanna vegetation zone of Nigeria.

Concept: Nigeria's vegetation belts (south to north)

  1. Mangrove/Swamp forest (coastal areas)
  2. Tropical rainforest (e.g., Ondo, Edo, Cross River)
  3. Guinea Savanna (the widest belt, often split into Southern and Northern Guinea Savanna)
  4. Sudan Savanna (e.g., Kano, Katsina, Sokoto)
  5. Sahel Savanna (far north, e.g., Borno, Yobe)

The Guinea Savanna covers the Middle Belt:

  • Southern Guinea Savanna: Kogi, Kwara, Oyo (northern parts), Benue, Nasarawa, Niger (southern parts), and the FCT.
  • Northern Guinea Savanna: Kaduna, Plateau, Bauchi, and parts of Niger.

Checking the options:

  • A. Borno and Sokoto are in the Sahel/Sudan Savanna, so this is wrong.
  • B. Kogi and Kwara are in the Southern Guinea Savanna, so this is correct.
  • C. Kaduna is Northern Guinea Savanna and Cross River is rainforest, so this is wrong.
  • D. Kano is Sudan Savanna, and Niger is mostly Guinea Savanna, so this is wrong because Kano doesn't fit.

Answer: B. Kogi and Kwara

Exam tip: Remember the belts as you move north: Forest → Southern Guinea → Northern Guinea → Sudan → Sahel. Kogi, Kwara, and Benue are the "Middle Belt" states that anchor the Southern Guinea Savanna. Kano, Sokoto, and Katsina are Sudan, while Borno and Yobe are Sahel.

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