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

Question

Which of the following characteristics is NOT common to all protists?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Protist characteristics
 **Related Topics**: Eukaryotic cells, multicellularity, classification of organisms
 **Prerequisites**: Basic understanding of cell biology and taxonomy.
## SOLUTION PATHWAY
**Given Information**:
  The question asks to identify a characteristic NOT common to all protists.
  Options: Eukaryotic cell structure, Presence of a nucleus, Membrane-bound organelles, Multicellularity
**Method & Steps**:
 1. Analyze each characteristic:
  Reasoning: Protists are a diverse group of eukaryotic organisms.  We need to determine which characteristic is not universally present.
 2. Evaluate each option:
  Working:
   a. Eukaryotic cell structure: All protists are eukaryotes, possessing a membrane-bound nucleus and other organelles.
   b. Presence of a nucleus:  All protists are eukaryotes and thus have a nucleus.
   c. Membrane-bound organelles:  All protists are eukaryotes and possess membrane-bound organelles like mitochondria and endoplasmic reticulum.
   d. Multicellularity: While some protists are multicellular (e.g., certain algae), many are unicellular (e.g., amoeba, paramecium).  Therefore, multicellularity is not a universal characteristic.
 3. Final step:
  Result: Multicellularity is the characteristic that is NOT common to all protists.
  Verification: The definition of protists encompasses both unicellular and multicellular organisms.  Therefore, multicellularity is not a defining feature of all protists.
 ## OPTION ANALYSIS
A ✓: Eukaryotic cell structure is a defining characteristic of protists.  All protists are eukaryotes.
B ✓: Presence of a nucleus is a defining characteristic of protists.  All protists are eukaryotes and possess a nucleus.
C ✓: Membrane-bound organelles are present in all protists due to their eukaryotic nature.
D :x: Multicellularity is not a universal trait among protists. Many are unicellular.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Assuming all protists are multicellular:  Protists exhibit a wide range of structural organization, including unicellular and multicellular forms.
   How to avoid: Remember the diversity within the protist kingdom.
  2.Confusing protists with other eukaryotic groups:  Protists are a diverse group and should not be conflated with plants, animals, or fungi.
   How to avoid: Focus on the defining characteristics of protists as a kingdom.
 **Quick Tips**:
  1.Remember that protists are a very diverse group encompassing both unicellular and multicellular organisms.
  2.Focus on the characteristics that are universally present in all protists (eukaryotic cell structure, nucleus, membrane-bound organelles).

Mr. NARESH KUMAR K · Answer

Eukaryotic cell structure

Mr. NARESH KUMAR K · Answer

Presence of a nucleus

Mr. NARESH KUMAR K · Answer

Membrane-bound organelles

Mr. NARESH KUMAR K · Answer

The correct Option is "Multicellularity"

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