Which statement explains why the circumference (girth) of a tree is less in the middle of the day than at night?
1 )
Mineral uptake by the root hair cells decreases during the night because root pressure has decreased.
2 )
Stomata close during the night and there is a build-up of water in the vascular tissue within the stem.
3 )
The phloem sieve tubes fill with dissolved solutes because the translocation rate is reduced at night.
There is less tension in the xylem vessels at night because the rate of transpiration is at a minimum.
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...