Question
Biology Question on Transport in Plants
Transport proteins of endodermal cells are control points, where a plant adjusts the . quantity and type of solutes that reach the xylem. ?Root endodermis is able to actively transport ions in one direction only because of the layer of
A
actin
B
lignin
C
suberin
D
cellulose.
Answer
suberin
Explanation
Solution
The endodermal cells of the roots have many transport proteins embeded in their plasma membrane. They let some solutes to cross the membrane, but prevent others. Transport proteins of endodermal cells are control points, where a plant adjusts the quantity and types of solutes that reach the xylem. The root endodermal cells because of the layer of suberin have the ability to actively transport ions in one direction only