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NECO SSCE Biology 2018 past questions and answers

This 2018 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 2018 set with instant marking.

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Sample NECO SSCE Biology 2018 questions

1. Which feature distinguishes a typical bacterial cell from a plant cell?
  1. It contains cytoplasm
  2. It lacks a membrane-bound nucleus
  3. It has a cell membrane
  4. It contains ribosomes

Answer: B. It lacks a membrane-bound nucleus

Bacteria are prokaryotes and their genetic material is not enclosed in a membrane-bound nucleus.

2. An object measuring 0.08 mm in reality appears 24 mm long in a drawing; what is the magnification?
  1. 300x
  2. 30x
  3. 0.003x
  4. 1920x

Answer: A. 300x

Magnification is image size divided by actual size, so 24 mm / 0.08 mm = 300x.

3. Why does water enter a root hair cell from moist soil by osmosis?
  1. The soil has a higher solute concentration than the cell sap
  2. Mineral ions move into the cell without a membrane
  3. The cell sap has a lower water potential than the soil water
  4. Water is actively pumped through the cell wall

Answer: C. The cell sap has a lower water potential than the soil water

Water moves across a selectively permeable membrane from the higher water potential of soil water to the lower water potential of the cell sap.

4. What is the main role of companion cells in a flowering plant?
  1. To form the waterproof outer layer of roots
  2. To conduct water through xylem vessels
  3. To produce pollen grains
  4. To support the functioning of sieve tube elements in phloem

Answer: D. To support the functioning of sieve tube elements in phloem

Companion cells provide metabolic support for sieve tube elements that transport dissolved food in the phloem.

5. Which substances are the raw materials used in photosynthesis to produce glucose and oxygen?
  1. Carbon dioxide and water
  2. Oxygen and glucose
  3. Nitrates and oxygen
  4. Starch and mineral salts

Answer: A. Carbon dioxide and water

Photosynthesis uses carbon dioxide and water, with light energy, to form glucose and release oxygen.

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