AP BIOLOGY

PLANTS

TRANSPORT IN PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following concept explained the process of translocation?
A
Transpirational pull
B
Pressure flow hypothesis
C
Root pressure
D
Cohesion and adhesion
Explanation: 

Detailed explanation-1: -Complete step by step answer: Munch Theory is also called the pressure flow hypothesis. This theory was given by German physiologist Ernst Munch in 1930. It shows the movement of sap through the phloem.

Detailed explanation-2: -The Pressure-Flow Hypothesis It proposes that water containing food molecules flows under pressure through the phloem. The pressure is created by the difference in water concentration of the solution in the phloem and the relatively pure water in the nearby xylem ducts.

Detailed explanation-3: -According to the pressure flow hypothesis, food is prepared in the plant leaves in the form of glucose. Before moving into the source cells present in the phloem, the prepared food is converted into sucrose.

Detailed explanation-4: -The Mass Flow Hypothesis was first proposed by German plant physiologist Ernst Munch in the year 1930. He theorised the movement of sap through the phloem tissue in plants. This theory is also known as the Pressure Flow Hypothesis.

There is 1 question to complete.