Question:
Thorns of Bougainvillea and tendrils of Cucurbita are examples for___________
Thorns of Bougainvillea and tendrils of Cucurbita are examples for___________
Updated On: Apr 18, 2023
- Divergent evolution
- Co-evolution
- Convergent evolution
- Adaptive radiation
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The Correct Option is A
Solution and Explanation
Thoms of Bougainvillea and tendrils of Cucurbita are modified branches and are axillary in position. It means axillary branches in Bougainvillea are modified into thorns for protection from burrowing animals and in Cucurbita into tendrils for climbing. These are called homologous organs and they are result of divergent evolution, i.e., have common ancestry but different functions.
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Concepts Used:
Evolution
Evolution is a process that occurs in changes in the genetic content of a population over time. Evolutionary change is generally classified into two: microevolution and macroevolution. The process of changes in allele frequencies in a population over time is a microevolutionary process. Three main mechanisms that cause allele frequency change are natural selection, genetic drift, and gene flow. On the other hand, macroevolution refers to change at or above the level of the species.