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NECO SSCE Biology 2003 past questions and answers

This 2003 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 2003 set with instant marking.

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Sample NECO SSCE Biology 2003 questions

1. Which cell structure contains the main light-absorbing pigment used in photosynthesis?
  1. Mitochondrion
  2. Chloroplast
  3. Ribosome
  4. Vacuole

Answer: B. Chloroplast

Chloroplasts contain chlorophyll, which absorbs light energy for photosynthesis.

2. A root hair cell absorbs nitrate ions from soil where their concentration is lower than inside the cell; which process enables this uptake?
  1. Diffusion
  2. Osmosis
  3. Transpiration
  4. Active transport

Answer: D. Active transport

Active transport uses energy to move nitrate ions against their concentration gradient.

3. In which plant tissue are dissolved sugars such as sucrose mainly transported from leaves to other organs?
  1. Phloem
  2. Xylem
  3. Epidermis
  4. Cortex

Answer: A. Phloem

Phloem transports sugars and other organic products from sources such as leaves to parts of the plant that use or store them.

4. What colour change indicates a positive iodine test for starch in a food sample?
  1. Green to red
  2. Blue to colourless
  3. Brown to blue-black
  4. Purple to orange

Answer: C. Brown to blue-black

Iodine solution changes from brown to blue-black when starch is present.

5. Which condition would generally reduce the rate of transpiration from a leafy plant?
  1. Dry air
  2. Strong wind
  3. High temperature
  4. High humidity

Answer: D. High humidity

High humidity reduces the water-vapour concentration gradient between the leaf and surrounding air.

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