Chapter 36.3, Problem 3CC

Summary Introduction

To explain: The reason why photosynthesis does not reduce even after adding a water-soluble photosynthetic inhibitor to the roots of a transpiring plant.

Concept introduction:

Plants absorb water and nutrients fromthe roots and transport to the rest of the plant through xylem and phloem. The epidermal cells in root hair are permeable to water and minerals. The endodermis layer in the root cortex selectively checks the passage of specific minerals to the xylem of the vascular cylinder. It consists of Casparian strip made up of suberin which is impermeable to water and minerals.