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Question #47482
The Question
In a laboratory experiment, a Basidiomycete culture undergoes successful plasmogamy between two compatible somatic hyphae. However, a sudden environmental shift to high temperature permanently inhibits the differentiation of the dikaryotic mycelium into a basidiocarp. Based on NCERT principles, which of the following statements accurately describes the consequence on its life cycle?
Options
- A.
The fungus will immediately undergo karyogamy in the vegetative hyphae to form a diploid resting spore.
- B.
The life cycle will arrest at the (n+n) stage because karyogamy and meiosis strictly occur within the basidium.
- C.
The dikaryotic mycelium will compensate by producing abundant asexual conidia for rapid dispersal.
- D.
Plasmogamy will reverse, separating the nuclei to restore the primary monokaryotic mycelium.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Basidiocarp|Dikaryophase|Karyogamy
Why This Question Is Tricky
Common Mistakes
Location Specificity & Functional Trap: The conceptual pivot is linking the sequential steps of fungal sexual reproduction to their strict anatomical locations.
Students often memorize 'Plasmogamy -> Karyogamy -> Meiosis' but forget that in Basidiomycetes, the latter two are anatomically locked to the basidium.
Additionally, Option C exploits the common misconception of assuming all higher fungi produce conidia under stress, testing the specific NCERT exception for Basidiomycetes.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Biological Classification - Class 11 |
| Concept | Basidiomycetes Reproductive Structure |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |