Xylem transports from roots to the aerial parts of the plants

The source and sink may be reversed

Which of the following helps in ascent of sap?

(1) Root pressure

(2) Transpiration

(3) Capillarity

(4) All of these

Mass flow or bulk flow system is the movement of substances in bulk or en masse from one point to another point as a result of

The process responsible for the movement of water from roots to all other parts of plants is

1. Evaporation of Water from leaves 

2. Capillary action 

3. Active transport 

4. Both 1 and 2

The continuous excretion of watery substance
from stump of a well-watered potted plant after
cutting off the shoot slightly above the base is
due to
1. root pressure

2. guttation

3. transpiration

4. imbibitions

In the xylem, a continuous chain of water, when it is broken, is re-established by:
1. Guttation
2. Root pressure
3. Imbibition
4. Transpiration