In the root cells _______ pathway becomes discontinuous in the endodermis due to the presence of casparian strip.
Correct answer: B. Apoplast
- A. Tonoplast
- B. Apoplast
- C. Symplast
- D. Vacuolar.
Explanation
The apoplast is the continuous pathway through cell walls and intercellular spaces, but the Casparian strip blocks it at the endodermis. Water and ions must then cross a cell membrane and enter the symplast, so students may choose c by identifying the pathway used after the blockage rather than the one made discontinuous.
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About Biological Importance of Water
Water supports life through its polarity, hydrogen bonding and ability to dissolve ionic and polar substances. Its high specific heat, heat of vaporization, cohesion, adhesion and incompressibility help regulate temperature, transport materials and maintain structure, while hydrolysis and osmosis depend directly on water.
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