Which of the following remained unchanged for last many million years?
Pinus
Rice
Acacia
Ginkgo
A
Acacia
B
Pinus
C
Rice
D
Ginkgo
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Solution
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Ginkgo biloba, or maidenhair tree, has been described as a living fossil, because it is the sole survivor of an ancient group of trees older than the dinosaurs.
The Ginkgo is an oddity in nature because it is a single species with no known living relatives; a living fossil that has been essentially unchanged for more than 200 million years.
Ginkgo biloba has been used in Chinese traditional medicine for centuries. The leaves are used in herbal remedies for cognitive complaints, such as alzheimers disease, dementia and vertigo. The phytochemistry and bioactivity of it, have been the subject of extensive research.
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