Question 1
在一个生态系统中,下列哪项属于生物因子(Biotic factors)?
- A阳光
- B水分
- C细菌
- D土壤
Answer: C. 细菌
生物因子指生态系统中所有具有生命的生物,如细菌、真菌、植物和动物。阳光、水分和土壤属于非生物因子。
UEC Junior 3 · 科学 (Science)
初三科学 (Science) · 生态与环境 (Ecology and Environment)
生态与环境 (Ecology and Environment) is part of the UEC Junior 3 Science syllabus. Practice the MCQs here to sharpen your exam technique — each question comes with a worked explanation.
Free sample questions
Question 1
Answer: C. 细菌
Question 2
Answer: B. 植食性动物
Question 3
Answer: C. $10\%$
Question 4
Answer: C. $\text{CO}_2$
Question 5
Answer: B. 光合作用
Other 科学 (Science) chapters
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