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JAMB UTME Biology 2019 past questions and answers

This 2019 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 2019 set with instant marking.

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Sample JAMB UTME Biology 2019 questions

1. Which feature of a desert plant most directly reduces water loss from its leaves?
  1. A thick waxy cuticle
  2. Numerous exposed stomata
  3. A broad, thin lamina
  4. Large air spaces in the leaf

Answer: A. A thick waxy cuticle

A thick waxy cuticle limits evaporation from the leaf surface.

2. Which pair of processes provides new combinations of alleles during sexual reproduction?
  1. Mitosis and budding
  2. Crossing over and random fertilization
  3. Binary fission and mutation
  4. Cloning and cell differentiation

Answer: B. Crossing over and random fertilization

Crossing over reshuffles alleles during meiosis, while random fertilization combines different gametes.

3. A drop of dye spreads through still water until its colour is evenly distributed. This is an example of
  1. active transport
  2. osmosis
  3. diffusion
  4. transpiration

Answer: C. diffusion

Diffusion is the net movement of particles from a region of higher concentration to lower concentration.

4. In a typical eukaryotic cell, chromosomes are located mainly in the
  1. ribosome
  2. vacuole
  3. cell membrane
  4. nucleus

Answer: D. nucleus

The nucleus contains the chromosomes that carry most of a eukaryotic cell's genetic material.

5. Which tissue carries water and dissolved mineral salts from the roots towards the leaves?
  1. Xylem
  2. Phloem
  3. Cambium
  4. Epidermis

Answer: A. Xylem

Xylem vessels conduct water and mineral ions upwards from the roots.

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