PLANT PHYSIOLOGY
TRANSPORT IN PLANT
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
True
|
|
|
False
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Xylem can conduct substances only in one direction, whereas, phloem can transport substances in both directions.
Detailed explanation-2: -Flow in Xylem is unidirectional while in Phloem is bidirectional.
Detailed explanation-3: -Phloem transport is bidirectional because sucrose gets accumulated in the phloem tissue and absorbs water creating a high turgor pressure. Other areas have low turgor pressure due to loss of water.
Detailed explanation-4: -Hence, the movement of food through the phloem is bi-directional i.e. both in upward and downward directions. The process of food transportation via the phloem requires ATP. Various elements of the phloem fibers, phloem parenchyma, and companion cells all contribute to the food translocation process.