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NECO SSCE Biology 2020 past questions and answers

This 2020 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 2020 set with instant marking.

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Sample NECO SSCE Biology 2020 questions

1. During photosynthesis, which substance is released as a by-product when water molecules are split?
  1. Oxygen
  2. Nitrogen
  3. Glucose
  4. Carbon dioxide

Answer: A. Oxygen

Photolysis of water during photosynthesis releases oxygen, electrons and hydrogen ions.

2. A student adds iodine solution to a food sample and observes a blue-black colour; which nutrient is present?
  1. Protein
  2. Starch
  3. Reducing sugar
  4. Fat

Answer: B. Starch

Iodine solution turns blue-black in the presence of starch.

3. Which tissue transports manufactured sugars from leaves to other parts of a flowering plant?
  1. Xylem
  2. Cortex
  3. Phloem
  4. Epidermis

Answer: C. Phloem

Phloem translocates sugars and other organic substances between plant organs.

4. What is the main digestive role of bile in the small intestine?
  1. It converts proteins into amino acids.
  2. It changes starch into maltose.
  3. It absorbs digested glucose.
  4. It emulsifies fats into small droplets.

Answer: D. It emulsifies fats into small droplets.

Bile salts emulsify large fat globules into smaller droplets, increasing the surface area for lipase.

5. A prolonged shortage of which vitamin is most likely to cause scurvy?
  1. Vitamin C
  2. Vitamin D
  3. Vitamin A
  4. Vitamin K

Answer: A. Vitamin C

Vitamin C is needed for healthy connective tissue, and its deficiency causes scurvy.

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