Asked by Lauren Mills on Jul 08, 2024
Verified
For water transport to occur there must be
A) palisade and spongy mesophyll.
B) sugar in the phloem.
C) atmospheric pressure available to do the work.
D) low pressure in the roots and high pressure in the leaves.
E) a continuous column of water in xylem and transpiration of water at the leaves.
Continuous Column
In structural engineering, refers to a vertical structural element that extends uninterrupted from one floor level to another.
Atmospheric Pressure
The force exerted onto a surface by the weight of the air above that surface in the atmosphere of Earth.
Xylem
A type of tissue in plants responsible for transporting water and dissolved nutrients from the roots to the rest of the plant.
- Examine and elucidate the theory of cohesion-tension in the movement of water within plants.
Verified Answer
MR
menna reyadJul 10, 2024
Final Answer :
E
Explanation :
Water transport in plants occurs through the xylem vessels and involves a continuous column of water that is pulled up from the roots to the leaves due to transpiration (evaporation of water from the leaves) and the resulting tension in the xylem vessels. This process is also known as the cohesion-tension theory. Palisade and spongy mesophyll are not directly involved in water transport, while sugar in the phloem is involved in the transport of organic nutrients. Atmospheric pressure can contribute to water movement, but it is not essential for water transport to occur. Low pressure in the roots and high pressure in the leaves are not accurate descriptions of the water transport process.
Learning Objectives
- Examine and elucidate the theory of cohesion-tension in the movement of water within plants.