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

Question

The haptomonada, *Pavlova*, exhibits a unique flagellar arrangement.  How does this differ fundamentally from the typical *Chlamydomonas* flagellar apparatus?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [A]
## CONCEPT FRAMEWORK
	**Primary Concept**: Flagellar structure and function in protists
	**Related Topics**: Eukaryotic flagella, flagellar arrangements, phylogenetic differences
	**Prerequisites**: Understanding of flagellar anatomy and function in different microorganisms
## SOLUTION PATHWAY
**Given Information**:
		* *Pavlova* is categorized under haptomonada, while *Chlamydomonas* is a green alga.
		* The flagellar arrangement in *Pavlova* is distinct from that of *Chlamydomonas*.
**Method & Steps**:
	1. Identify the flagellar structure of *Chlamydomonas*.
		Reasoning: *Chlamydomonas* typically has two equal-length flagella, both covered in hairs (or mastigonemes).
		Formula/Rule: The flagellar structure can be described as:
		$$ F_{Chlamydomonas} = 2 	ext{ (equal length, hairy)} $$
	2. Analyze the flagellar structure of *Pavlova*.
		Working: In *Pavlova*, one flagellum is shorter and smooth, while the other is longer and hairy.
		Key Point: The unique arrangement allows for different locomotion mechanics compared to *Chlamydomonas*.
	3. Compare and conclude differences.
		Result: This results in a fundamental difference in propulsion and movement efficiency.
		Verification: The statement in option A accurately reflects the structural difference.
## OPTION ANALYSIS
[A] ✓: One flagellum is typically shorter and smooth, lacking hairs - This option correctly describes the flagellar structure of *Pavlova* compared to *Chlamydomonas*.
[B] :x: Both flagella are of equal length and covered in hairs - This describes *Chlamydomonas*, not *Pavlova*.
[C] :x: Three flagella emerge from a basal body - This does not accurately represent either organism.
[D] :x: Flagella are absent in *Pavlova* - This is incorrect as *Pavlova* possesses flagella but with different characteristics.

Mr. NARESH KUMAR K · Answer

The correct Option is "One flagellum is typically shorter and smooth, lacking hairs"

Mr. NARESH KUMAR K · Answer

Both flagella are of equal length and covered in hairs

Mr. NARESH KUMAR K · Answer

Three flagella emerge from a basal body

Mr. NARESH KUMAR K · Answer

Flagella are absent in *Pavlova*

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