The Question is from neet-botany anatomy-of-flowering-plants anatomy-of-dicot-root, and it was created by the author D VINOD

Question

A unique feature observed in the dicot root vascular cylinder is the presence of:

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [Option B]
## CONCEPT FRAMEWORK
	**Primary Concept**: Structure of dicot root vascular cylinder
	**Related Topics**: Vascular tissue arrangement, Xylem types
	**Prerequisites**: Understanding of plant anatomy
## SOLUTION PATHWAY
**Given Information**:
		- Dicot root vascular cylinder structure
		- Various types of xylem arrangements
**Method & Steps**:
	1. Understanding xylem types: Dicot roots typically display exarch xylem.
		Reasoning: Exarch xylem has protoxylem located towards the outside and metaxylem towards the center, which is characteristic of dicots.
		Formula/Rule: The arrangement of xylem types in roots can be described as endarch, exarch, mesarch, and centrarch.
	2. Analyzing protoxylem poles in dicots: Dicot roots usually have more than six protoxylem poles.
		Working: In dicots, the xylem is arranged in a way that can accommodate multiple protoxylem poles, enhancing water transport efficiency.
		Key Point: The presence of more than six protoxylem poles is a unique feature of dicot roots.
	3. Conclusion: The unique feature of dicot root vascular cylinders is the presence of exarch xylem with multiple protoxylem poles.
		Result: [Option B] is correct.
		Verification: Review the definitions of xylem types and their arrangements in dicot roots.
## OPTION ANALYSIS
[A] :x: [Endarch xylem is not typical of dicots; it is found in monocots.]
[B] ✓: [Exarch xylem with more than six protoxylem poles is characteristic of dicot roots.]
[C] :x: [Mesarch xylem is not a common arrangement in dicots.]
[D] :x: [Centrarch xylem with a single protoxylem pole does not represent dicot structure.]
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing xylem arrangements: Remember that dicots have exarch xylem, while monocots have endarch.
		2. Overlooking the number of protoxylem poles: Always check the typical structures in dicots versus monocots.
	**Quick Tips**:
		1. Use mnemonic devices to remember xylem types (E for Exarch in Dicot, M for Mesarch in specific cases).
		2. Visual aids like diagrams of dicot and monocot roots can reinforce learning.

D VINOD · Answer

Endarch xylem with four protoxylem poles

D VINOD · Answer

The correct Option is "Exarch xylem with more than six protoxylem poles"

D VINOD · Answer

Mesarch xylem with two protoxylem poles

D VINOD · Answer

Centrarch xylem with a single protoxylem pole

NEET Botany Anatomy of Flowering Plants Anatomy Of Dicot Root MCQs

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