Q9 / 200 · NEET 2023 (All India) · Botany
Given below are two statements:
Statement I: Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body.
Statement II: Exarch condition is the most common feature of the root system.
In the light of the above statements, choose the correct answer from the options given below:
Given below are two statements:
Statement I: Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body.
Statement II: Exarch condition is the most common feature of the root system.
In the light of the above statements, choose the correct answer from the options given below:
- Correct answerAStatement I is incorrect but Statement II is true.
- BBoth Statement I and Statement II arre true.
- CBoth Statement I and Statement II are false.
- DStatement I is correct but Statement II is false.
Solution
Primary xylem is of two types – protoxylem and metaxylem.
Arrangement of protoxylem and metaxylem:
- In stems, the protoxylem lies towards the centre (pith) and the metaxylem lies towards the periphery of the organ. This type of primary xylem is called endarch.
- In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of primary xylem is called exarch.
Hence, the correct answer is option: 'A'.