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NECO SSCE Biology 2022 past questions and answers

This 2022 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 2022 set with instant marking.

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Sample NECO SSCE Biology 2022 questions

1. In a flower where the stigma becomes receptive before the anthers release pollen, the condition is called
  1. protogyny
  2. protandry
  3. cleistogamy
  4. self-incompatibility

Answer: A. protogyny

Protogyny occurs when the female part of a flower matures before its male part.

2. Which function is performed by the placenta during pregnancy?
  1. It produces sperm cells for the fetus.
  2. It allows exchange of nutrients and respiratory gases between maternal and fetal blood.
  3. It prevents all substances from passing between mother and fetus.
  4. It supplies the fetus with air from the mother's lungs through a tube.

Answer: B. It allows exchange of nutrients and respiratory gases between maternal and fetal blood.

The placenta provides an exchange surface for nutrients, wastes and respiratory gases between maternal and fetal circulation.

3. A strawberry plant can produce new plants from horizontal stems that grow along the soil surface; these stems are
  1. bulbs
  2. rhizomes
  3. runners
  4. tubers

Answer: C. runners

Runners are horizontal stems that develop roots and shoots at points where they touch the soil.

4. Which plant hormone is most directly associated with cell elongation in young shoots?
  1. Ethylene
  2. Abscisic acid
  3. Cytokinin
  4. Auxin

Answer: D. Auxin

Auxin promotes elongation of cells in growing shoots.

5. A root growing downwards in response to gravity demonstrates
  1. positive geotropism
  2. negative geotropism
  3. positive phototropism
  4. negative hydrotropism

Answer: A. positive geotropism

Growth towards the direction of gravity is positive geotropism.

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