Measuring Ecosystems Quiz
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5 questions, one answer each
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1. Which of these correctly shows the start of a food chain?
- A. Secondary consumer
- B. Producer
- C. Predator
- D. Decomposer
2. What piece of equipment is placed randomly on the ground to sample a small area of habitat?
- A. Transect
- B. Pooter
- C. Quadrat
- D. Pitfall trap
3. A student places 10 quadrats and counts an average of 6 daisies per quadrat. If 200 quadrats of the same size would cover the whole field, what is the estimated total population?
- A. 60
- B. 600
- C. 1200
- D. 2000
4. Which process directly returns carbon dioxide to the atmosphere?
- A. Photosynthesis
- B. Respiration
- C. Absorption by roots
- D. Transpiration
5. Scientists record that a species of alpine plant is now found at higher altitudes than 50 years ago. Which explanation best fits this observation?
- A. The soil pH has become more acidic locally
- B. Rising temperatures have made higher altitudes more suitable for the species
- C. The plant has evolved a new food source
- D. Quadrat sampling methods have changed