Exam 14: The History of Life

If a plant evolved during the Permian period and spread across the continent of Pangaea,where might the fossils of this animal be found now?

The following numbered sets each represent a distinct group of organisms: (1)three toes per foot,cold-blooded,feathers,no finger adaptations (2)three toes per foot,warm-blooded,body hair,opposable thumbs (3)three toes per foot,warm-blooded,feathers,no finger adaptation (4)three toes per foot,warm-blooded,body hair,no finger adaptations Which of the following choices is the MOST likely to represent the order in which these groups would appear on an evolutionary tree,from oldest to most recent?

In order to best determine relationships among different organisms,scientists examine

Scientists use existing fossils to predict what the transitional forms between organisms might look like.Why might it be so hard for scientists to find fossils of these transitional forms?

Correctly match the definition with the correct geologic time period. -large and relatively sudden increase in the diversity of animal life; increase in diversity of algae; first vertebrates; 490-540 mya

If Earth's current mass extinction were to end tomorrow,what would be expected to occur with adaptive radiations?

Resolving the relationship between the various kingdoms has been challenging because species often resemble one another.For example,the kingdom ________ contains some organisms that are animal-like and others that are plant-like.

For the species Homo sapiens the first part of the name,Homo,denotes the

Identify key characteristics for kingdom Fungi and provide three examples of members of this kingdom.

According to the classification chart shown below,humans are in the order ________.

Because there is always new information to discover and interpret,scientists must be prepared to revise their ________ when there is evidence to suggest it is not correct.

The Cambrian explosion resulted in the evolution of more than 17,000 species of an animal known as the trilobite.The sheer number of trilobite fossils found in modern times suggests that trilobites were abundant,perhaps the rulers of the seas.Today,no living descendants of this group exist.What happened?

When making sourdough bread,bakers use a combination of microorganisms to produce the sour flavor and to leaven the dough before baking.The organisms typically used to produce the lactic acid that give sourdough its distinctive flavor are very small rod-shaped prokaryotic organisms known generally as Lactobacilli.These microorganisms are from the kingdom ________.The other organisms that produce the leavening effect are nonphotosynthetic eukaryotes,have cell walls,absorb their nutrients from their environment,and (in this case)are very tolerant of acidic environments.These microorganisms are from the kingdom ________.

Which of the following statements about bird evolution is NOT correct?

The ________ feature occurs between each branch on an evolutionary tree.

The figure below shows the number of living taxonomic families that existed on Earth during the last 540 million years.The sudden decreases in family numbers at 445,360,250,200,and 65 million years ago represent Earth's five mass extinction events.Based on this data,which mass extinction had the biggest impact on the overall diversity of life on Earth?

In the evolutionary tree below,which of the nodes corresponds to the MOST recent common ancestor of troodontids,dromaeosaurids,and Archaeopteryx?

The evolution of sperm-cell-containing structures called ________ freed gymnosperms from requiring water for fertilization.

In a fictional movie set in a land dominated by flowering plants,advancing and retreating glaciers,and a cast that includes a human,a wooly mammoth,a saber-toothed cat,and dinosaurs,the ________ would be most out of place in the setting according to the geological time line of life on Earth.

Canis lupus is the scientific name for wolves.Canis refers to the ________ name.