The Question is from neet-botany plant-kingdom , and it was created by the author D VINOD

Question

A bryophyte, which harbours a nitrogen fixing blue-green alga in its thallus, is

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
	**Primary Concept**: Identification of a specific bryophyte genus based on its symbiotic relationship with nitrogen-fixing blue-green algae.
	**Related Topics**: Bryophyte classification, Nitrogen fixation, Symbiotic relationships in plants, Characteristics of Anthoceros.
	**Prerequisites**: Basic knowledge of bryophyte groups and their characteristics.
## SOLUTION PATHWAY
**Given Information**:
	Bryophyte with nitrogen-fixing blue-green algae in its thallus.
	Four options: Pogonatum, Riccia, Marchantia, Anthoceros.
**Method & Steps**:
	1. Recall the bryophytes that commonly form symbiotic relationships with nitrogen-fixing cyanobacteria.
		Reasoning: Some bryophytes have evolved the ability to house nitrogen-fixing cyanobacteria, typically in their thallus, enabling them to utilize atmospheric nitrogen.
		Formula/Rule: None
	2. Identify the specific bryophyte from the options that is known to host nitrogen-fixing blue-green algae.
		Working: Anthoceros is a well-known genus of hornworts which contains symbiotic cyanobacteria in its thallus.
		Key Point:  While other bryophytes may have associated microbes, the symbiotic relationship with nitrogen-fixing cyanobacteria is a key feature of *Anthoceros*.
	3. Select the correct option.
		Result: Option D, Anthoceros is the correct answer.
		Verification:  Knowledge of bryophyte symbiosis confirms that *Anthoceros* is the correct answer.
 ## OPTION ANALYSIS
[A] :x: Pogonatum is a moss and does not typically have this symbiotic relationship.
[B] :x: Riccia is a liverwort and does not typically have this symbiotic relationship.
[C] :x: Marchantia is a liverwort and does not typically have this symbiotic relationship.
[D] ✓: Anthoceros is a hornwort that is known to have symbiotic nitrogen-fixing cyanobacteria in its thallus.
 ## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing different bryophyte groups: Mistaking liverworts, hornworts and mosses. Study the distinguishing features of each group.
		2. Not understanding symbiosis: Forgetting that some organisms live in close association for mutual benefit. Review symbiotic relationships in plants.
	**Quick Tips**:
		1. Remember hornworts (Anthoceros) for their symbiotic relationship with nitrogen-fixing cyanobacteria.
		2. Use flashcards to memorize key characteristics of different plant groups.

D VINOD · Answer

Pogonatum

D VINOD · Answer

Riccia

D VINOD · Answer

Marchantia

D VINOD · Answer

The correct Option is "Anthoceros"

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