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WAEC WASSCE Biology 2002 past questions and answers

This 2002 WAEC WASSCE 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 2002 set with instant marking.

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Sample WAEC WASSCE Biology 2002 questions

1. Which component of a plant cell wall provides most of its strength?
  1. Cellulose
  2. Starch
  3. Glycogen
  4. Chlorophyll

Answer: A. Cellulose

Cellulose microfibrils form the strong framework of the plant cell wall.

2. Which feature is characteristic of a prokaryotic cell?
  1. A nucleus enclosed by a nuclear membrane
  2. DNA not enclosed in a membrane-bound nucleus
  3. Mitochondria with folded inner membranes
  4. Several membrane-bound organelles

Answer: B. DNA not enclosed in a membrane-bound nucleus

Prokaryotic cells lack a membrane-bound nucleus, so their DNA lies in the cytoplasm region.

3. A strip of potato is placed in distilled water and becomes firmer and heavier; which process best explains the change?
  1. Diffusion of starch out of the cells
  2. Active transport of water into the cells
  3. Osmosis of water into the cells
  4. Evaporation of water from the cells

Answer: C. Osmosis of water into the cells

Water enters the potato cells by osmosis from the more dilute surrounding solution.

4. In the scientific name Mangifera indica, what does the second word indicate?
  1. The family
  2. The order
  3. The genus
  4. The specific epithet

Answer: D. The specific epithet

In binomial nomenclature the first word is the genus and the second is the specific epithet.

5. How does a saprophytic fungus obtain much of its food from dead organic material?
  1. It secretes enzymes outside its body and absorbs soluble products
  2. It traps sunlight with chlorophyll and makes glucose
  3. It ingests whole particles into a stomach
  4. It absorbs nitrate only through roots

Answer: A. It secretes enzymes outside its body and absorbs soluble products

Saprophytic fungi digest dead material externally and absorb the resulting soluble nutrients.

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