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JAMB UTME Biology 2013 past questions and answers

This 2013 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 2013 set with instant marking.

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Sample JAMB UTME Biology 2013 questions

1. A persistent pesticide enters a lake food chain through plankton; which organism is most likely to contain the highest concentration of the pesticide?
  1. A fish-eating bird at the top of the food chain
  2. Algae that absorb the pesticide directly
  3. Zooplankton that feed on algae
  4. Small fish that feed on zooplankton

Answer: A. A fish-eating bird at the top of the food chain

The pesticide becomes more concentrated at each trophic level, so the top predator accumulates the most.

2. A population of antelope stops increasing in size because food and space have become limiting; the population has reached its
  1. biotic potential
  2. carrying capacity
  3. immigration rate
  4. ecological succession

Answer: B. carrying capacity

Carrying capacity is the largest population that available resources can support over time.

3. Which action is an example of in-situ conservation of an endangered antelope?
  1. Storing its skin in a museum
  2. Keeping breeding pairs in a zoo
  3. Protecting the antelope in its natural habitat within a reserve
  4. Preserving its genes in a laboratory freezer

Answer: C. Protecting the antelope in its natural habitat within a reserve

In-situ conservation protects a species within the ecosystem where it naturally lives.

4. Which feature of a desert plant most directly reduces water loss from its leaves?
  1. Broad, thin leaves
  2. Numerous exposed stomata
  3. A shallow root system only
  4. A thick waxy cuticle

Answer: D. A thick waxy cuticle

A thick waxy cuticle reduces evaporation from the leaf surface.

5. Which human characteristic is an example of discontinuous variation?
  1. Blood group
  2. Body mass
  3. Height
  4. Hand span

Answer: A. Blood group

Blood groups fall into distinct categories rather than a continuous range.

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