Question:
According to Telome theory, the two sister branches of a telome showed unequal growth, and smaller branch developed into the leaf. This phenomenon is called:
According to Telome theory, the two sister branches of a telome showed unequal growth, and smaller branch developed into the leaf. This phenomenon is called:
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Overtopping = unequal growth of dichotomous branches; Planation = flattening into a plane; Webbing = tissue filling between branches.
Updated On: May 26, 2026
- Planation
- Overtopping
- Syngenesis
- Incurvation
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The Correct Option is B
Solution and Explanation
Step 1: Concept
Telome theory of leaf evolution.
Step 2: Meaning
Telome theory proposes that leaves evolved from branched stem systems through several processes: overtopping, planation, webbing, and recurvation.
Step 3: Analysis
Overtopping: One branch of a dichotomous fork grows faster than the other, overtaking it; the smaller branch becomes a lateral appendage (proto-leaf). This matches the description.
Planation: Branches flatten into a single plane.
Incurvation: Branches curve inward.
Syngenesis: Fusion of telomes.
Step 4: Conclusion
Unequal growth of sister telomes resulting in a dominant and a reduced branch is called Overtopping. Final Answer: (B)
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