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Question #46116
The Question
While studying the structural organization of animals, a student compares the contractile mechanisms of Hydra and the human heart. Which of the following statements regarding their contractile tissues is INCORRECT?
Options
- A.
The epithelio-muscular cells of Hydra lack the mesodermally derived protein scaffolding found in the intercalated discs of human cardiac tissue.
- B.
Human cardiac myocytes form a functional syncytium via gap junctions, whereas Hydra relies on the basal contractile processes of its diploblastic cell layers.
- C.
Despite lacking a true mesoderm, the epithelio-muscular cells of Hydra possess intercalated discs to ensure synchronized contraction of the gastrovascular cavity.
- D.
The contractile structures in Hydra are dual-functional, serving both as a protective or lining epithelium and for movement, unlike specialized mesodermal cardiac muscles.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
Intercalated Disc Function|Cnidaria|Epithelio-muscular cells
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: The trap exploits the functional overlap of 'tissue contraction'.
Students often confuse the basic contractile ability of Hydra's epithelio-muscular cells with the advanced, mesoderm-dependent histological features of vertebrate muscle.
Failing to strictly apply the 'Diploblastic vs.
Triploblastic' embryological constraint leads to incorrectly assuming Hydra can possess intercalated discs.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Animal Kingdom - Class 11 |
| Concept | Diploblastic Exception |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |