Natural selection and adaptation Quiz
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5 questions, one answer each
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1. Which statement is correct about natural selection?
- A. Organisms develop alleles that they need
- B. Random mutation produces new alleles, and advantageous ones become more frequent
- C. Alleles acquired during life are inherited
- D. Only harmful mutations occur
2. Which type of selection reduces the range of a characteristic and keeps the mean the same?
- A. Directional
- B. Stabilising
- C. Artificial
- D. Random
3. Which is a physiological adaptation?
- A. A thick fur coat
- B. Hunting at night
- C. Producing concentrated urine to conserve water
- D. A long beak
4. The clear zone around an antibiotic disc has a diameter of 16 mm. What is its area, to 3 significant figures?
- A. 50.3 mm²
- B. 201 mm²
- C. 804 mm²
- D. 25.1 mm²
5. Why is the incubation temperature in school practicals kept at about 25 °C?
- A. It makes the bacteria grow faster
- B. It prevents growth of human pathogens
- C. It kills the bacteria
- D. It sterilises the agar