Concept explainers
To explain: Whether the statement “Most species that evolved have already become extinct” is true or false.
Introduction: Extinction is a process of termination of one species or group of species. The species formed get extinct on an ongoing basis.
Answer to Problem 1SQ
Correct answer: The given statement “Most species that evolved have already become extinct” is true.
Explanation of Solution
New species evolve from the older ones. More than 90 percentage of existing species are now extinct. For example, evolved dinosaurs have already become extinct. During the Triassic period, ancestors of dinosaur were evolved from amphibian species. During the Jurassic period, dinosaur’s number increased and by the Cretaceous period, different verities of dinosaurs were evolved. However, during the end of Cretaceous period and beginning of the tertiary period, they become extinct. Thus, the statement is true.
Want to see more full solutions like this?
Chapter 48 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
- Which one of the following statements is not true? Speciation is the process of creating new species There have been five mass extinctions preserved in the fossil record All living things can be classified into one of four taxonomic domains Some bacteria are autotrophs Current rates of extinction are higher than background extinction ratesarrow_forwardWould it be possible to bring extinct species back? In an article it was expressed how brinng extinct species back is still very futuristic, and we should aim at a smaller creature. Using a smaller sized species like the Christmas rat can set up scientists for potentially larger species. There is a major issue that comes up and that is incomplete genes. It makes it difficult to even compare modern day rat to the Christmas rats' genome because their genes are specialized and as more time passes, the harder it is to have a match. The article also talked about using modern day elephants to make a woolly elephant, meaning they don't want a perfect match. Rather, scientists want to make hybrids since it could be more realistic.arrow_forwardAmong the descendants of the ancestor common to lineages A and B, how many total extinction events have occurred in the past 1 million years?arrow_forward
- What is adaptive Radiation It is when radiation cause mutations It is when animals adapted to solar radiation It is when a species rapidly adapts to many new and open environmentsarrow_forwardWe (humans) do not have any ethical burden to worry about other species because extinction is a natural process. True or False?arrow_forwardTrue or false? Fossils can be body parts of ancient organisms such as bones,shells,teeth or plant leavesarrow_forward
- true or false? fossils can tell us which organisms live in the past.arrow_forwardThe Galápagos Islands in the Pacific Ocean have varied habitats. Divergent evolution is occurring on these islands. What meaning does it imply? * Have lived unchanged through long periods of stability. Change in response to changes in other species they interact with Had common ancestors but have become increasingly different Are becoming more like each other in response to their habitats no answerarrow_forwardHow does Lamarck’s idea of “use or disuse” differ from Darwin’s idea, which was later called “descent with modification”? Short answer please guys help mearrow_forward
- Question 2 Which term refers to the evolution of similar traits in distantly related species? coevolution O adaptive radiation founder effect divergent evolution O convergent evolutionarrow_forwardnew species divergence Which row below identifies the model of evolution shown in this diagram and offers the best explanation of this model? The statement above is best completed by the answers in row: Row Model Explanation evolutionary history consists of long periods of equilibrium where there is little change, interrupted by periods of speciation gradualism punctuated equilibrium gradual change occurs steadily in a linear fashion; big changes (such as the evolution of a new species) occur as a result of many small changes gradual change occurs steadily in a linear fashion; big changes (such as the evolution of a new species) occur as a result of many small changes gradualism punctuated equilibrium evolutionary history consists of long periods of equilibrium where there is little change, interrupted by periods of speciation Timearrow_forwardYou are examining the fossil record and notice a dramatic decrease in species diversity that seems to span across multiple groups of organisms within a very short period of time. This could most likely indicate: The beginning of a new geologic period A mass extinction event A major evolutionary breakthrough An artifact of poor fossil preservation adaptive radiationarrow_forward
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College