Question

In the given T.S of root, what are part A, B and C?

• A. A- Vacuolar path, B- membrane pathway, C-Casparian strips
• B. A- Transmembrane, B- Capillary, C- Endodermis
• C. A- Symplast, B- Apoplast, C- Casparian strip
• D. A- Apoplast, B-Symplast, C- Endodermis

Answer 1

The correct option is C A- Symplast, B- Apoplast, C- Casparian strip

1. In the symplastic pathway, the water moves through the protoplasts of the root cortex. It is the living continuum in the pathway of transport of water.
2.The apoplast pathway is a non-living continuum where the water moves through the cell walls and intercellular space of the root cortex.
3. Casparian strips are present in the walls of the root endodermis and are suberised. It acts like a barrier in the passage of water.