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NECO SSCE Biology 2026 past questions and answers

This 2026 NECO SSCE 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 2026 set with instant marking.

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Sample NECO SSCE Biology 2026 questions

1. In a population of insects exposed repeatedly to an insecticide, a few individuals survive and produce offspring. Which process best explains the increase in resistant insects over generations?
  1. Natural selection
  2. Use and disuse
  3. Artificial pollination
  4. Random mating only

Answer: A. Natural selection

Insecticide-resistant individuals survive and leave more offspring, so natural selection increases the resistance trait.

2. At each trophic level in a food chain, much of the energy taken in by organisms is unavailable to the next level because it is
  1. converted entirely into mineral salts
  2. lost as heat during respiration and movement
  3. stored permanently in the soil
  4. changed into sunlight

Answer: B. lost as heat during respiration and movement

Respiration and activities release much of the energy as heat, leaving less biomass energy for the next trophic level.

3. Which action is most likely to conserve a threatened population of elephants in its natural environment?
  1. Increasing uncontrolled hunting
  2. Draining wetlands near the habitat
  3. Protecting its habitat and enforcing anti-poaching laws
  4. Introducing more roads through breeding areas

Answer: C. Protecting its habitat and enforcing anti-poaching laws

Habitat protection and enforcement against poaching reduce the main pressures on wild elephant populations.

4. A pond has 240 fish at the start of a month. If 36 die and 24 are added by migration, with no births or other migration, what is the population at the end of the month?
  1. 180
  2. 204
  3. 216
  4. 228

Answer: D. 228

The final population is 240 - 36 + 24 = 228 fish.

5. A tapeworm living in the intestine of a human obtains food while harming its host. This relationship is
  1. parasitism
  2. saprophytism
  3. mutualism
  4. commensalism

Answer: A. parasitism

In parasitism, the parasite benefits while the host is harmed.

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