Biological Molecules Quiz (2) Biology AS & A Level
CIE
AS & A Level
Biology (9700)
فروردین
2010
شامل مباحث:
UNIT 2: Biological molecules
تعداد سوالات: 20
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
25 دقیقه

پیش نمایش صفحه اول فایل
Which of the following statements explain why a stem is both cut and connected to a potometer under water?
1 To prevent plasmolysis of xylem vessel elements
2 To prevent the collapse of xylem vessel elements
3 To prevent air entering xylem vessel elements