The Question is from neet-botany biodiversity taxonomic-categories, and it was created by the author Mr. NARESH KUMAR K

Question

In which of the following, the usual taxonomic hierarchy is not followed?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
**Primary Concept**: Taxonomic hierarchy and its deviations
**Related Topics**: Plant classification, Bentham and Hooker system,  Phylogenetic relationships
**Prerequisites**: Knowledge of basic plant classification systems and major plant groups.
## SOLUTION PATHWAY
**Given Information**:
    * The question asks about deviations from the standard taxonomic hierarchy.
    * Options present different groupings from plant classification.
**Method & Steps**:
  1. **Recall the standard taxonomic hierarchy**: Kingdom, Phylum/Division, Class, Order, Family, Genus, Species.
    Reasoning: Understanding the expected order is crucial to identify deviations.
    Formula/Rule: The standard taxonomic hierarchy is hierarchical.
  2. **Analyze each option**: 
    * **A. Polypetalae and Gamopetalae**: These are subclasses within dicotyledons based on petal arrangement (free vs. fused), thus hierarchical.
    * **B. Gamopetalae and Monochlamydae**: These are subclasses of dicots based on petal and perianth arrangements respectively, hierarchical.
    * **C. Monochlamydae and monocots**: Monochlamydae is a group of dicots with a single whorl of perianth, while monocots are a separate major class of flowering plants. Thus, this option presents non-hierarchical groups.
    Reasoning: This is where the deviation from the typical hierarchy is present. Monochlamydae is a group within dicots, and monocots are a distinct class.
  3. **Identify the deviation**: The usual taxonomic hierarchy places monocots and dicots as separate classes, not as a subgroup within dicots (Monochlamydae).
    Result: Option C is the correct answer.
 ## OPTION ANALYSIS
[A] :x: Polypetalae and Gamopetalae are subclasses within dicots, following the hierarchical order.
[B] :x: Gamopetalae and Monochlamydae are subclasses within dicots, following the hierarchical order.
[C] ✓: Monochlamydae is a subgroup of dicots, while monocots are a separate class, thus not following the usual taxonomic hierarchy.
[D] :x: Option C is the correct answer.
 ## LEARNING AIDS
**Common Mistakes**:
 1. **Confusing subclasses with classes**: Not understanding the difference between major classes and subclasses can lead to wrong conclusions.
 2. **Not recognizing exceptions**: The question focuses on deviations, so being aware of such exceptions is important.
**Quick Tips**:
 1. **Review major plant groups**: Understanding major groups like monocots and dicots helps in understanding the hierarchy.
2. **Study the Bentham and Hooker system**: This system is often used as a basis for understanding plant classification and its deviations.

Mr. NARESH KUMAR K · Answer

Polypetalae and Gamopetalae

Mr. NARESH KUMAR K · Answer

Gamopetalae and Monochlamydae

Mr. NARESH KUMAR K · Answer

The correct Option is "Monochlamydae and monocots"

Mr. NARESH KUMAR K · Answer

None of the above

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