Answer: The correct answer is desert-dwelling species. Explanation: Any preserved remains, trace or impression of anything, which was once living in the past is termed as a fossil.
What is least likely to appear in the fossil record?
The correct answer is – worm’s body. In order for a living tissue to be fossilized, there need to be certain very specific condition that will enable its long term preservation.
What is most likely to appear in the fossil record?
The hard shell of a clam is more likely to fossilize because it is more resistant to biological and environmental destruction. For this reason, teeth, bones and other hard parts of organisms are much more numerous in the fossil record than soft tissues.
What type of organism is least likely to be represented in the fossil record of the Cambrian period quizlet?
Almost every metazoan phylum with hard parts, and many that lack hard parts, made its first appearance in the Cambrian. The only modern phylum with an adequate fossil record to appear after the Cambrian was the phylum Bryozoa, which is not known before the early Ordovician.
Which of the following would be most common to fossilize?
The most common method of fossilization is called permineralization, or petrification. After an organism’s soft tissues decay in sediment, the hard parts — particularly the bones — are left behind.
Which organism has a better chance of leaving a fossil?
When an organism is buried quickly, there is less decay and the better the chance for it to be preserved. The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts. One reason for this is that scavengers generally do not eat these parts.
Which type of organism do you think is most likely to be preserved?
Hard parts like bones and teeth are more likely to be preserved.
What 4 things do Fossil records show?
Fossils are the remains or traces of ancient life that are usually buried in rocks. Examples include bones, teeth, shells, leaf impressions, nests, and footprints. This evidence reveals what our planet was like long ago. Fossils also show how animals changed over time and how they are related to one another.
What does the fossil record tell us?
Fossils give us information about how animals and plants lived in the past. … Some animals and plant are only known to us as fossils. By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other.
Will the fossil record ever be complete?
The fossil record is incomplete. Of the small proportion of organisms preserved as fossils, only a tiny fraction have been recovered and studied by paleontologists. In some cases the succession of forms over time has been reconstructed in detail. One example is the evolution of the horse.
Why is the fossil record incomplete?
There are gaps in the fossil record because many early forms of life were soft-bodied. The soft parts of organisms do not form fossils well. This means there is little information about what these organisms looked like. Any traces of fossils that there may have been were likely destroyed by geological activity.
What is true of the Cambrian explosion quizlet?
The Cambrian explosion is evidence for the instantaneous creation of life on Earth. … The Cambrian explosion marks the appearance of filter-feeding animals in the fossil record. You just studied 12 terms!
Which statement best describes why the Cambrian explosion was important?
C )Explanation: The Cambrian explosion is the most known for its importance in the “explosion” in ecological diversity (as seen in fossil records). Arguably, this period represents the most important part of the evolution of life in Earth. Hence, the correct answer is C.
What are the 5 types of fossils?
Five different types of fossils are body fossils, molds and casts, petrification fossils, footprints and trackways, and coprolites.
What environments would most likely cause fossil formation?
Fossils are formed in different ways, but most are formed when a plant or animal dies in a watery environment and is buried in mud and silt. Soft tissues quickly decompose leaving the hard bones or shells behind. Over time sediment builds over the top and hardens into rock.
In which type of rock are you most likely to find a fossil?
Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically low places (such as lakes or ocean basins) have the best chance of being preserved.