NEET Botany MCQs

Which of the following is the main driving force for root pressure?

The column of water within xylem vessels of tall redwood trees can reach remarkable heights without breaking. What primary property of water contributes to this phenomenon?

Imagine a thin glass tube dipped in water. The water rises in the tube due to adhesion. In tall trees, a similar phenomenon helps maintain the water column, but a different property of water plays the major role in preventing the column from breaking under its own weight. What is this property?

Which force is primarily responsible for the continuous water column within the xylem vessels of plants, enabling them to transport water against gravity?

If the cohesive forces between water molecules were significantly weaker, what would be the most likely consequence for tall trees?

The tensile strength of the water column in xylem is crucial for upward water movement in plants. This strength is primarily a result of which intermolecular interaction?

Which of the following is NOT a characteristic of the apoplastic pathway?

The apoplastic pathway of water transport in plants is interrupted at the endodermis by which structure?

Which substance makes the Casparian strip impermeable to water, thus blocking the apoplastic pathway?

Water moving through the apoplast encounters a barrier that forces it into the symplast. This barrier is located in which tissue layer of the root?