AP BIOLOGY

EVOLUTION

EVIDENCE FOR EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The fossil record contains fossils from many geologic ages. Fossils enable scientists to piece together what ancient organisms looked like. Which of these answers best describes how fossils in the fossil record are classified?
A
by ages and physical similarities
B
by whether the fossil contains hard or soft tissues
C
by size and the type of rock in which they are found
D
by similarities in their DNA and in the minerals they contain
Explanation: 

Detailed explanation-1: -Scientists can reconstruct a general picture of an ancient environment by collecting information about the soil and the plant and animal remains that are found at a site. Comparisons of living plants and animals with these ancient remains can then indicate the types of environments that existed in the past.

Detailed explanation-2: -Fossils provide important evidence for evolution and the adaptation of plants and animals to their environments. Fossil evidence provides a record of how creatures evolved and how this process can be represented by a ‘tree of life’, showing that all species are related to each other.

Detailed explanation-3: -The fossil record helps scientists identify a single species from which other organisms have descended.

Detailed explanation-4: -The fossil record provides snapshots of the past which, when assembled, illustrate a panorama of evolutionary change over the past 3.5 billion years. The picture may be smudged in places and has bits missing, but fossil evidence clearly shows that life is very, very old and has changed over time through evolution.

There is 1 question to complete.