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Question #46879
The Question
A student attempts to draw a structural analogy between the digestive system of Periplaneta americana and the vascular system of angiosperms. They hypothesize that just as hepatic caeca are 'open-ended' tubules to maximize digestive secretion, monocot stems possess 'open' vascular bundles to maximize secondary growth. Identify the correct biological evaluation of this hypothesis.
Options
- A.
The hypothesis is entirely incorrect; hepatic caeca are blind tubules located at the foregut-midgut junction, and 'open' vascular bundles are a feature of dicot stems, possessing cambium.
- B.
The hypothesis is partially correct; hepatic caeca are indeed open-ended tubules, but 'open' vascular bundles are characteristic of dicot leaves, not monocot stems.
- C.
The hypothesis is entirely incorrect; hepatic caeca are blind tubules at the midgut-hindgut junction, and monocot stems possess 'closed' vascular bundles due to the presence of cambium.
- D.
The hypothesis is partially correct; monocot stems do possess 'open' vascular bundles, but hepatic caeca are blind tubules that primarily absorb water and salts.
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
Hepatic_Caeca|Vascular_Bundle_Openness|Absorption_Surface
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: The question tests the dual misconception of anatomical terminology across zoology and botany.
Students often confuse 'blind tubules' with 'open-ended' structures due to their secretory nature.
Furthermore, the trap tests the exact definition of 'open' in vascular bundles (presence of cambium) and its taxonomic distribution (dicots, not monocots), while simultaneously testing the exact anatomical location of the caeca versus Malpighian tubules.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Structural Organisation in Animals - Class 11 |
| Concept | Cockroach Alimentary Canal |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |