In plant roots, the Casparian strip is correctly described by which of the following?

a) It ensures that all minerals are absorbed from the soil in equal amounts.
b) It provides energy for the active transport of minerals into the stele from the cortex.
c) It provides increased surface area for the absorption of mineral nutrients.
d) It ensures that all water and dissolved substances must pass through a cell membrane before entering the stele.
e) It is located in the walls between endodermal cells and cortex cells.


Ans: d) It ensures that all water and dissolved substances must pass through a cell membrane before entering the stele.

Biology & Microbiology

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