Question:
Which of the following is a living fossil?
Which of the following is a living fossil?
Updated On: May 5, 2024
- Mirabilis jalapa
- Ginkgo biloba
- Pinus longifolia
- Dalbergia sissoo.
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The Correct Option is B
Solution and Explanation
Cycas and Ginkgo are often considered as the living fossil because they are lone/one of the few representative of once a large group of plants (which was once a well flourished group) and possess traits of extinct pteridosperms and other gymnosperms.
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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.