
Differentiate between Exarch xylem and Endarch Xylem.
Answer
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Hint: The vascular tissues in the plants that conduct water and other essential nutrients from root to other parts of the plants and it also provides physical support to the plant is called xylem. Xylem that forms primarily is called protoxylem whereas metaxylem is a differentiated part of the protoxylem and is obviously formed later after the formation of protoxylem. Main difference.
Complete answer:
Main difference between Endarch and Exarch is that Endarch refers to development from the centre such that it has old cells towards the periphery. When we talk about Exarch it shows that development starts from the periphery they have old cells present towards the centre.
Note: Xylem is made of dead cells. These cells are adapted according to the function they perform as they are dead cells they form up a hollow tube in the xylem so that water moves throughout this tissue and no organelle is found so that maximum capacity of water can be transported. The walls of xylem are strengthened by lignin, a substance that helps xylem to withstand pressure changes and provide sufficient strength.
Complete answer:
Main difference between Endarch and Exarch is that Endarch refers to development from the centre such that it has old cells towards the periphery. When we talk about Exarch it shows that development starts from the periphery they have old cells present towards the centre.
EXARCH XYLEM | ENDARCH XYLEM |
Exarch is that arrangement in which the protoxylem is directed towards the periphery and metaxylem towards the centre. | Endarch is that kind of arrangement in which protoxylem is directed towards the centre and metaxylem towards the periphery. |
The development of xylem in this exarch arrangement follows the centripetal pattern. | The development of xylem in endarch arrangement has a centrifugal pattern. |
Exarch arrangement is found in the roots of most plants. | Endarch arrangement is found in the stem of flowering plants. |
Note: Xylem is made of dead cells. These cells are adapted according to the function they perform as they are dead cells they form up a hollow tube in the xylem so that water moves throughout this tissue and no organelle is found so that maximum capacity of water can be transported. The walls of xylem are strengthened by lignin, a substance that helps xylem to withstand pressure changes and provide sufficient strength.
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