
The xylem in which the protoxylem is directed towards the periphery and metaxylem towards the center
(a) Exarch
(b) Mesarch
(c) Endarch
(d) Diarch
Answer
482.1k+ views
Hint: Complex tissues are made up of more than one type of cell. The type of xylem found in the parts of the plant which helps in the absorption of nutrients from the soil as well as acts as an anchorage where the xylem develops from the outward to the inward direction.
Complete answer:
Xylem is the chief water-conducting tissue of the plants.
The Exarch condition of xylem is present in which the metaxylem lies towards the center and the protoxylem towards the periphery. This condition is found in the roots of the plants.
Additional Information: The xylem which arises early, i.e., during the primary growth of the plant body is called the primary xylem. There are also two forms, Protoxylem and Metaxylem, based on their roots.
-The first formed xylem is known as protoxylem and the later formed is known as metaxylem.
-The arrangement of primary xylem occurs in two ways, Exarch and Endarch.
-In the endarch condition, the protoxylem (the first-formed xylem) lies towards the center (pith) and the metaxylem (the later-formed xylem) lies towards the periphery. Hence, the youngest lies closest to the periphery in this type of arrangement.
-In exarch condition, the protoxylem (the first-formed xylem) lies towards the periphery and the metaxylem (the later-formed xylem) lies towards the center (pith). Hence, the youngest lies closest to the center in this type of arrangement.
So, the answer is, “Exarch.”
Note: -The metaxylem is more mature than the protoxylem.
- Protoxylem has narrow-lumen vessels, and metaxylem has broad-diameter vessels.
-Endarch type of arrangement occurs in stems whereas the exarch condition occurs in the roots.
Complete answer:
Xylem is the chief water-conducting tissue of the plants.
The Exarch condition of xylem is present in which the metaxylem lies towards the center and the protoxylem towards the periphery. This condition is found in the roots of the plants.
Additional Information: The xylem which arises early, i.e., during the primary growth of the plant body is called the primary xylem. There are also two forms, Protoxylem and Metaxylem, based on their roots.
-The first formed xylem is known as protoxylem and the later formed is known as metaxylem.
-The arrangement of primary xylem occurs in two ways, Exarch and Endarch.
-In the endarch condition, the protoxylem (the first-formed xylem) lies towards the center (pith) and the metaxylem (the later-formed xylem) lies towards the periphery. Hence, the youngest lies closest to the periphery in this type of arrangement.
-In exarch condition, the protoxylem (the first-formed xylem) lies towards the periphery and the metaxylem (the later-formed xylem) lies towards the center (pith). Hence, the youngest lies closest to the center in this type of arrangement.
So, the answer is, “Exarch.”
Note: -The metaxylem is more mature than the protoxylem.
- Protoxylem has narrow-lumen vessels, and metaxylem has broad-diameter vessels.
-Endarch type of arrangement occurs in stems whereas the exarch condition occurs in the roots.

Recently Updated Pages
Express the following as a fraction and simplify a class 7 maths CBSE

The length and width of a rectangle are in ratio of class 7 maths CBSE

The ratio of the income to the expenditure of a family class 7 maths CBSE

How do you write 025 million in scientific notatio class 7 maths CBSE

How do you convert 295 meters per second to kilometers class 7 maths CBSE

Write the following in Roman numerals 25819 class 7 maths CBSE

Trending doubts
State and prove Bernoullis theorem class 11 physics CBSE

What are Quantum numbers Explain the quantum number class 11 chemistry CBSE

Write the differences between monocot plants and dicot class 11 biology CBSE

Who built the Grand Trunk Road AChandragupta Maurya class 11 social science CBSE

1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

State the laws of reflection of light
