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JAMB UTME Biology 2005 past questions and answers

This 2005 JAMB UTME Biology set has 40 practice questions. Try these 5 free sample questions, tap a question to reveal the answer and explanation. Then practise the whole 2005 set with instant marking.

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Sample JAMB UTME Biology 2005 questions

1. In a grassland food chain, grass is eaten by grasshoppers, which are eaten by frogs, which are eaten by snakes; which organism is the secondary consumer?
  1. Frog
  2. Grass
  3. Grasshopper
  4. Snake

Answer: A. Frog

The grasshopper is the primary consumer, so the frog that eats it is the secondary consumer.

2. If producers in an ecosystem store 20,000 kJ of energy and about 10% passes to each successive trophic level, how much energy is available to primary consumers?
  1. 200 kJ
  2. 2,000 kJ
  3. 10,000 kJ
  4. 18,000 kJ

Answer: B. 2,000 kJ

Ten percent of 20,000 kJ is 2,000 kJ.

3. Which process converts atmospheric nitrogen into compounds that can enter the soil through the activity of certain soil bacteria?
  1. Denitrification
  2. Transpiration
  3. Nitrogen fixation
  4. Nitrification

Answer: C. Nitrogen fixation

Nitrogen-fixing bacteria convert atmospheric nitrogen into nitrogen-containing compounds.

4. Which action is most likely to conserve a threatened population of a wild animal in its natural environment?
  1. Removing all predators
  2. Keeping every individual in captivity
  3. Introducing an unrelated species
  4. Protecting its habitat and restricting illegal hunting

Answer: D. Protecting its habitat and restricting illegal hunting

Protecting habitat and controlling hunting preserve the conditions needed for the population to survive.

5. The broad, waxy leaves of many aquatic plants are best regarded as adaptations that help the plants to
  1. float and reduce water loss from the exposed surface
  2. absorb oxygen directly from deep soil
  3. prevent all contact with sunlight
  4. reproduce without forming gametes

Answer: A. float and reduce water loss from the exposed surface

Broad leaves aid floating and their waxy surface limits water loss from the part exposed to air.

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