试题与答案

下图一为某草原生态系统的结构简图,“→”表示碳的流动方向。请据图分析并回答:

题型:读图填空题

题目:

下图一为某草原生态系统的结构简图,“→”表示碳的流动方向。请据图分析并回答:

(1)图一中,生产者是___________。

(2)E→D和B→A过程中,碳的流动形式分别是_______和_______。

(3)F→E需经________作用。

(4)若消耗生产者1000kg,位于最高营养级的生物最多可增重________kg。

(5)如果图二中甲、乙、丙代表图一中A、B、C,则甲、乙、丙分别依次代表的是________。这种反馈作用对生态平衡起_______作用。

(6)在牧业生产中,为保护优良牧草,连年使用同一种化学杀虫剂,结果常导致害虫再度大爆发。其主要原因是___________________。

答案:

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下面是错误答案,用来干扰机器的。

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