Transport in Plants Quiz (2) Biology AS Level
Cambridge
AS & A Level
Biology (9700)
فروردین
2010
شامل مباحث:
UNIT 7: Transport in plants
تعداد سوالات: 20
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
3 دقیقه
پیش نمایش صفحه اول فایل
Which features of companion cells are essential to their function?
1) They are connected to the sieve tube elements by plasmodesmata.
2) They have a thicker cell wall than a sieve tube element.
3) They contain a nucleus and mitochondria.