全国各地中考真题:黑龙江省牡丹江市2017年中考生物真题试题(含答案)
黑龙江省牡丹江市2017年中考生物试题一、单项选择题(请将正确答案的代表字母填入括号内。本题25小题,每小题2分,共50分)1.在一定的空间范围内,生物与环境所形成的统一整体叫做生态系统。地球上最大的生态系统是A.海洋生态系统B.草原生态系统C.森林生态系统D.生物圈2.枯叶蝶的体色与周围落叶的颜色基本一致,很难被天敌发现。这种现象属于A.环境影响生物B.生物适应环境C.生物影响环境D.生物破坏环境3.捕蝇草和蝇在细胞基本结构上的区别是捕蝇草的细胞中具有A.细胞质B.细胞膜C.细胞核D.细胞壁4.通过学习生物学,小豪了解到狗由小长大与细胞的生长、分裂和分化有关。其中在细胞分裂过程中变化最为明显...
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