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> 王华想要验证植物生长是否需要无机盐。她将两株生长状况相同的幼苗分别培养在蒸馏水和土壤浸出液中,观察实验结果。请回答下列问题:(1)设计本实验时提出的假设应该是_______-八年级生物
王华想要验证植物生长是否需要无机盐。她将两株生长状况相同的幼苗分别培养在蒸馏水和土壤浸出液中,观察实验结果。请回答下列问题:(1)设计本实验时提出的假设应该是_______-八年级生物
题目简介
王华想要验证植物生长是否需要无机盐。她将两株生长状况相同的幼苗分别培养在蒸馏水和土壤浸出液中,观察实验结果。请回答下列问题:(1)设计本实验时提出的假设应该是_______-八年级生物
题目详情
王华想要验证植物生长是否需要无机盐。她将两株生长状况相同的幼苗分别培养在蒸馏水和土壤浸出液中,观察实验结果。请回答下列问题:
(1)设计本实验时提出的假设应该是_______________________。
(2)土壤溶液和蒸馏水在物质成分上最大的区别是______________________。
(3)通过这个实验,可以得到的结论是____________________。
题型:填空题
难度:中档
来源:四川省期中题
答案
(1)植物的生长需要无机盐
(2)含有多种无机盐
(3)植物的生长需要无机盐
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题目简介
王华想要验证植物生长是否需要无机盐。她将两株生长状况相同的幼苗分别培养在蒸馏水和土壤浸出液中,观察实验结果。请回答下列问题:(1)设计本实验时提出的假设应该是_______-八年级生物
题目详情
(1)设计本实验时提出的假设应该是_______________________。
(2)土壤溶液和蒸馏水在物质成分上最大的区别是______________________。
(3)通过这个实验,可以得到的结论是____________________。
答案
(2)含有多种无机盐
(3)植物的生长需要无机盐