Evidences of Evolution: Fossil Records and Observations

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What is the main reason why fossils are considered the most direct evidence of evolution?

Fossils offer insight into the geographic location of ancient species.

Fossils provide information on the age of the Earth.

Successive evolutionary changes can be observed when comparing old and young fossils. (correct)

Fossils represent over 90% of all species that ever existed.

Why are fossils rare according to the text?

Due to a high number of species that have ever lived on Earth.

Because biological factors like the population of a species affect fossilization.

Fossils require specific types of rock formations to become preserved.

Geological factors such as habitat and geographic location play a role in fossil rarity. (correct)

How many fossil species have been discovered so far according to the text?

Around 300,000 (correct)

Less than 100,000

Approximately 500,000

Over 1 million

What is the minimum age requirement for an organism to be considered a fossil?

>10,000 years old Signup and view all the answers

Which of the following is NOT a biological factor that can affect fossilization?

Type of rock Signup and view all the answers

Approximately how many T.rex fossils have been discovered according to the text?

Exactly 32 fossils Signup and view all the answers

What type of fossils are used to identify or define a geological period?

Index Fossils Signup and view all the answers

Which fossilization process involves organic materials being replaced by minerals in bones and wood?

Permineralization Signup and view all the answers

What type of fossils are more or less complete organisms preserved in amber, tar, or ice?

Original Remains Signup and view all the answers

Which type of fossil reflects animal behavior, locomotion, and diet?

Trace Fossils Signup and view all the answers

What is the term for the process where a mold is formed after the organic material decomposes and minerals fill the space?

Cast and Molds Signup and view all the answers

Which type of fossilized remains show traits of both an ancestral group and a descendant group?

Transitional Fossils Signup and view all the answers

What term is used in the text to describe 'transitional forms'?

Missing link Signup and view all the answers

Based on the text, what does 'Orthogenesis' suggest about the evolution of species?

Evolution is linear and progressive Signup and view all the answers

What does the text mention as a factor that affects the possibility of cloning an extinct animal from a fossil?

Type of the fossil Signup and view all the answers

What is the approximate half-life of DNA, as mentioned in the text?

521 years Signup and view all the answers

Why is it impossible to clone non-avian dinosaurs directly from fossils, according to the text?

Their DNA is too degraded Signup and view all the answers

How does the text describe the geographical distribution of species in isolated continents and islands?

They have unique plant and animal communities Signup and view all the answers

Evidences of Evolution: Fossil Records and Observations

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