The Question is from neet-botany , and it was created by the author K SURESH KUMAR

Question

Which of the following is a defining characteristic of the kingdom Monera?

K SURESH KUMAR · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Classification of living organisms into kingdoms based on their cellular organization and characteristics.
 **Related Topics**: Prokaryotic cells, eukaryotic cells, cell structure, modes of nutrition.
 **Prerequisites**: Basic understanding of cell biology and the five-kingdom classification system.
## SOLUTION PATHWAY
**Given Information**:
The question asks for a defining characteristic of the kingdom Monera.
**Method & Steps**:
1. Recall the characteristics of the five kingdoms (Monera, Protista, Fungi, Plantae, Animalia).
  Reasoning:  We need to identify the unique trait that sets Monera apart from other kingdoms.
  Formula/Rule: N/A
2. Analyze the options provided.
  Working: 
  Option A: Multicellular organization – incorrect; Monerans are unicellular.
  Option B: Presence of membrane-bound organelles – incorrect; Monerans lack membrane-bound organelles like mitochondria and chloroplasts (prokaryotic).
  Option C: Lack of a true nucleus – correct; Monerans are prokaryotes, meaning their genetic material is not enclosed within a membrane-bound nucleus.
  Option D: Autotrophic mode of nutrition – incorrect; While some Monerans are autotrophs (e.g., cyanobacteria), many are heterotrophs.
 3. Identify the correct defining characteristic.
  Result: The lack of a true nucleus (prokaryotic nature) is a defining characteristic of the kingdom Monera.
  Verification:  The definition of Monera aligns with prokaryotic cells lacking a true nucleus and other membrane-bound organelles. 
## OPTION ANALYSIS
A :x: Multicellular organization is not a characteristic of the kingdom Monera. Monerans are unicellular organisms.
B :x: Monerans lack membrane-bound organelles, a key characteristic distinguishing them from eukaryotes.
C ✓: Lack of a true nucleus is a defining feature of Monera, as they are prokaryotic organisms.
D :x: While some Monerans are autotrophic, many are heterotrophic, making autotrophy not a defining characteristic of the entire kingdom.
## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing Monera with other kingdoms:  Students might mistakenly associate characteristics of other kingdoms (like multicellularity or presence of organelles) with Monera.
   How to avoid: Focus on the defining characteristic of prokaryotic cell structure and the absence of membrane-bound organelles.
  2.Overgeneralizing nutrition:  Assuming all Monerans are autotrophic due to the presence of photosynthetic cyanobacteria.
   How to avoid: Remember that Monera includes both autotrophic and heterotrophic organisms.
 **Quick Tips**:
  1.Remember the acronym “P-NO”: Prokaryotic, No Organelles to help remember Moneran characteristics.
  2.Visualize a simple bacterial cell to understand the absence of membrane-bound structures.

K SURESH KUMAR · Answer

Multicellular organization

K SURESH KUMAR · Answer

Presence of membrane-bound organelles

K SURESH KUMAR · Answer

The correct Option is "Lack of a true nucleus"

K SURESH KUMAR · Answer

Autotrophic mode of nutrition

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