B4.1 Adaptation to environment Quiz
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5 questions, one answer each
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1. Which is a biotic factor?
- A. Soil pH
- B. Salinity
- C. Competition
- D. Temperature
2. Why must reef-building corals live in shallow, clear water?
- A. To avoid predators
- B. So light reaches their photosynthetic algae
- C. Because deep water is too salty
- D. To avoid calcium carbonate
3. A biome with hot temperatures and under 250 mm rain per year is:
- A. Tundra
- B. Taiga
- C. Hot desert
- D. Tropical forest
4. Cacti in America and euphorbias in Africa look similar because of:
- A. Common ancestry
- B. Convergent evolution
- C. Artificial selection
- D. Identical DNA
5. A plant is found only between pH 5.5 and 7.0 along a transect. This suggests:
- A. pH is certainly the cause of its distribution
- B. Its range of tolerance for pH may be about 5.5–7.0
- C. It needs acid soils below pH 5
- D. Soil pH does not vary