What is the difference between Endarch and exarch in primary xylem?

In exarch xylem, the protoxylem is towards the periphery whereas in endarch xylem, the protoxylem is towards the centre of the axis. Exarch condition of xylem is found in roots, whereas endarch condition occurs in stems.

What is a Endarch xylem?

Endarch xylem. It is the arrangement in which the protoxylem is directed towards the center and metaxylem elements towards the periphery. It is the arrangement in which the protoxylem is directed towards the periphery and metaxylem towards the center.

What is difference between primary and secondary xylem in stem?

Primary xylem is derived from the primary meristem, i.e. procambium. It is of two types, namely protoxylem and metaxylem. Protoxylem develops first and then metaxylem. Secondary xylem is derived from lateral meristem, i.e. vascular cambium during secondary growth, e.g. in the dicot stem during secondary growth.

What do you mean by exarch and Endarch vascular bundle?

Endarch: In vascular bundle, endarch is the arrangement where protoxylem (older xylem) is inside and metaxylem (newly formed) is outside. Exarch: When protoxylem is outside and metaxylem is inside, the arrangement is known as exarch.

What is the difference between Protoxylem and Metaxylem?

Protoxylem is the primary xylem that develops first during primary growth. Metaxylem is formed after the protoxylem during primary growth in the xylem. It grows before the maturation of other plant organs. It grows after the maturation of all plant organs.

Is monocot stem Endarch or exarch?

From the above information we can conclude that exarch and polyarch condition is found in monocot root. Hence, the correct answer is option (C).

What is the difference between primary and secondary xylem and phloem?

The key difference between primary xylem and secondary xylem is that the procambium forms the primary xylem during the primary growth, while the vascular cambium forms the secondary xylem during the secondary growth. Xylem and phloem are the main types of complex tissues in plants.

What is the difference between primary and secondary phloem?

Primary phloem is produced from the apical meristem, which is a primary meristematic tissue, whereas secondary phloem is produced by vascular cambium, which is a secondary or lateral meristem. Phloem fibres or bast fibres are generally absent in primary phloem but present in secondary phloem.

Are stems Endarch or exarch?

So the correct option is ‘Exarch, Endarch’.

What is Protophloem and Metaphloem?

Protophloems are the first structures that are produced as a result of primary growth in the phloem. Metaphloems are formed after the formation of protophloem. Growth. It is formed even before the maturation of plant organs. It is formed after the maturation of plant organs.

Is Metaxylem secondary xylem?

Primary and secondary xylem Primary xylem is formed during primary growth from procambium. It includes protoxylem and metaxylem. Metaxylem develops after the protoxylem but before secondary xylem. Metaxylem has wider vessels and tracheids than protoxylem.

Is xylem exarch or Endarch in dicot root?

So, the correct option is ‘Endarch’.

What is Polyarch xylem?

In monocot root vascular bundles are radial in arrangement. There are eight bundles each of xylem and phloem. Hence, the condition is described as polyarch. Xylem is described as exarch in monocot root.

What is primary xylem and primary phloem?

most common arrangement of the primary xylem and phloem is called a collateral bundle; the outer portion of the procambium (adjacent to the cortex) becomes phloem, and the inner portion (adjacent to the pith) becomes xylem. In a bicollateral bundle, the phloem is both outside and inside the xylem, as…

What is the main difference between xylem and phloem?

What are the functions of xylem and phloem? Xylem and phloem facilitate the transportation of water, minerals and food throughout the plant. Xylem carries water and minerals from the roots to the leaves. Whereas, phloem carries the food prepared by the leaves to different parts of the plant.

What is the difference in the formation of primary xylem and phloem vs secondary xylem and phloem?

The difference between primary and secondary phloem is that primary phloem forms in primary growth regions at the tips of stems and roots, and secondary phloem is what arises from the vascular cambium.

What transports phloem?

Phloem transports sucrose and amino acids up and down the plant. This is called translocation . In general, this happens between where these substances are made (the sources) and where they are used or stored (the sinks).

How do you distinguish between Protophloem and Metaphloem?

Difference between Tracheids and Vessels….Protophloem vs Metaphloem.

Protophloem	Metaphloem
Companion cells are absent.	Companion cells are present.
Size of Cells
The protophloems have smaller cells and are therefore less prominent structures.	They have bigger cells and are more prominent structures.
Sieve Elements

What is primary phloem?

What is Diarch and Polyarch?

The xylem patch in the monocot root is 7 or more (polyarch) 1. Diarch status indicates that there are two xylem bundles, while hexarch status implies six xylem bundles. 2. The vascular bundles of the dicot root are classified as tetrarch and radial.

What is the difference between endarch and exarch xylem?

Hence, this is also a major difference between endarch and exarch. Furthermore, endarch xylem arrangement occurs in the stem of the seed plants while the exarch arrangement occurs in the root of vascular plants.

What is the difference between parenchyma and xylem and phloem?

Xylem mainly made up of dead cells and parenchyma is the only living cells present, whereas phloem mainly contains living cells and fibers are the only dead cells. Xylem is found in the center of the vascular bundle, deep in the plant and made up of xylem vessels, fiber, and tracheids,…

What is the difference between primary and secondary xylem?

The key difference between primary xylem and secondary xylem tissue in plants is their development. The primary xylem develops from the apical meristem during the primary growth, while the secondary xylem develops from the lateral meristem during the secondary growth.

What is the difference between xylem and phloem as described by microscope?

The differences between xylem and phloem as described by the microscope are 1. Microscopic definition Xylem is a type of plant tissue that carries water and mineral salts to the plant body. Phloem is a type of plant tissue that transports food and organic nutrients to the different parts of the plants.