1、The following figure is three oat seedlings(燕麦幼苗).The seedlings in A and C are normal,and seedling in B is the one whose coleoptile tip(胚芽鞘尖端) was cut off.Put A and B on uniformly rotating discs(旋转的圆盘),and C on a s
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![1、The following figure is three oat seedlings(燕麦幼苗).The seedlings in A and C are normal,and seedling in B is the one whose coleoptile tip(胚芽鞘尖端) was cut off.Put A and B on uniformly rotating discs(旋转的圆盘),and C on a s](/uploads/image/z/14972367-39-7.jpg?t=1%E3%80%81The+following+figure+is+three+oat+seedlings%EF%BC%88%E7%87%95%E9%BA%A6%E5%B9%BC%E8%8B%97%EF%BC%89.The+seedlings+in+A+and+C+are+normal%2Cand+seedling+in+B+is+the+one+whose+coleoptile+tip%28%E8%83%9A%E8%8A%BD%E9%9E%98%E5%B0%96%E7%AB%AF%29+was+cut+off.Put+A+and+B+on+uniformly+rotating+discs%28%E6%97%8B%E8%BD%AC%E7%9A%84%E5%9C%86%E7%9B%98%29%2Cand+C+on+a+s)
1、The following figure is three oat seedlings(燕麦幼苗).The seedlings in A and C are normal,and seedling in B is the one whose coleoptile tip(胚芽鞘尖端) was cut off.Put A and B on uniformly rotating discs(旋转的圆盘),and C on a s
1、The following figure is three oat seedlings(燕麦幼苗).
The seedlings in A and C are normal,and seedling in B is the one whose coleoptile tip(胚芽鞘尖端) was cut off.Put A and B on uniformly rotating discs(旋转的圆盘),and C on a still disc.The three pots are lightened with
one side light source.Several days later,seedling in A grows toward__________________ B grows toward____________________________ and C grows toward __________________________________.
1、The following figure is three oat seedlings(燕麦幼苗).The seedlings in A and C are normal,and seedling in B is the one whose coleoptile tip(胚芽鞘尖端) was cut off.Put A and B on uniformly rotating discs(旋转的圆盘),and C on a s
Several days later,seedling in A grows toward to the air straightly
B grows toward to the air straightly
C grows toward the light