Question

In Angiosperms, normally ‘Exarch Xylem’ occurs in

• A. dicot stem
• B. monocot stem
• C. dicot root
• D. dicot leaf

Hint:

Exarch xylem is commonly found in dicot roots where the xylem develops from the outside toward the center of the root.

Answer 1

The Correct Option is C

Step 1: Understand Exarch Xylem.
Exarch xylem is characterized by the arrangement where the xylem tissue develops from the outside towards the center. It is commonly found in dicot roots where the xylem is arranged with the protoxylem positioned toward the outside and metaxylem toward the center.
Step 2: Analyze the options.
- (A) Dicot stem: This typically has a different xylem arrangement, often with the xylem being centrally located.
- (B) Monocot stem: This stem type generally has scattered vascular bundles, and xylem does not exhibit exarch formation.
- (C) Dicot root: This is the correct answer as dicot roots typically exhibit exarch xylem.
- (D) Dicot leaf: Xylem in leaves is arranged differently, and exarch xylem is not found here.

Step 3: Conclusion.
Exarch xylem is characteristic of dicot roots, so the correct answer is (C).