EVERYDAY SCIENCE

Detailed explanation-1: -Cycas and Ginkgo are known as living fossils because they have not yet altered over the years while its related members or species have become extinct or fossilized.

Detailed explanation-2: -Cycads, an ancient group of cone-producing tropical plants, are sometimes called “living fossils” because they have existed for more than 200 million years–since before the time of the dinosaurs.

Detailed explanation-3: -Final Answer: Cycas is known as a living fossil.

Detailed explanation-4: -Ginkgo biloba (also called the maidenhair tree) is often referred to as a “living fossil, ” because it is the only remaining representative of a perished botanical family (the Ginkgoaceae) and is considered to be the oldest living tree species [1].

Detailed explanation-5: -Ginkgo biloba is called living fossil.