Another important question to answer is this: what part did widespread extinction play in the development of animals?The part that widespread extinction played in the process of evolution.At their most fundamental level, mass extinctions have the effect of reducing biodiversity by wiping off certain lineages and, along with them, any descendant species that those lineages may have potentially given rise to.
How does mass extinction lead to evolution?
This is the famous extinction event that brought the age of the dinosaurs to an end. In each of these cases, the mass extinction created niches or openings in the Earth's ecosystems. Those niches allowed for new groups of organisms to thrive and diversify, which produced a range of new species.
How have mass extinctions contributed to the evolution of life on Earth quizlet?
result, mass extinction alters course of evolution dramatically, removing many evolutionary lineages and reducing diversity of life on Earth for millions of years. mass extinction can change ecological communities by changing types of organisms that live in them.
What is the primary role played by mass extinction events in the history of life on Earth quizlet?
What is the primary role played by mass extinction events in the history of life on Earth? They open up ecological niches and accelerate evolution.
What type of evolution occurs after mass extinction?
As lineages invade different niches and become isolated from one another, they split, regenerating some of the diversity that was wiped out by the mass extinction. The upshot of all these processes is that mass extinctions tend to be followed by periods of rapid diversification and adaptive radiation.
What role have mass extinctions played in the evolution of animals?
What role has mass extinction played in animal evolution? Mass extinction can remove ecologically dominant groups, paving the way for new or previously minor groups to diversify.
What are the effects of mass extinction?
Mass extinctions affect the history of life by decimating existing diversity and ecological structure and creating new evolutionary and ecological pathways. Both the loss of diversity during these events and the rebound in diversity following extinction had a profound effect on Phanerozoic evolutionary trends.
Why are mass extinctions important quizlet?
Mass extinctions are incredibly important in understanding the history of our life. Dramatically changing the biodiversity of the planet, permanently reconstructing the global ecology.
What are the effects of mass extinction quizlet?
What are the consequences of mass extinctions? Mass extinctions affect biological diversity profoundly. Mass extinctions are random events and can permanently remove species with advantageous features and change the course of evolution forever.
What is a mass extinction event quizlet?
STUDY. Extinction Events. -periods of Earth's history when large numbers of species die out simultaneously or within a limited time frame.
What happens to species that survive after extinction?
Species that remain after the extinction are able to radiate, new adaptations arise, and these produce the diversity seen today.
How have animals diversified?
Animals have diversified into the vast number of niches provided by tree diversity.
What do ants eat?
Some species of ant "farm" aphids by protecting them from predators. In return, the ants feed on a sugar-rich liquid (called honeydew) secreted by the aphids. The ecological relationship between the ants and the aphids is:
What is the divergence of two populations from a common ancestor?
Speciation is the divergence of two populations from a common ancestor. How does it contribute to biological diversity?
Who was the scientist who studied the intertidal zone?
In the late 1960s, Robert Paine conducted landmark studies on diversity in the rocky intertidal zone, comparing the species diversity in control plots with diversity in experimental plots from which he removed the top predator, sea stars. After 5 years, 15 species of intertidal invertebrates lived in the control plots, while the experimental plots were dominated by only two species, one mussel and one barnacle. The process MOST likely responsible for the loss of species diversity in the experimental plots was:
Is the endosymbiont's genome related to the nuclear genome?
The genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.
How does mass extinction affect the environment?
Mass extinction can remove ecologically dominant groups, paving the way for new or previously minor groups to diversify.
How many times has the mass extinction occurred?
Mass extinctions have occurred five times in Earth's history. The end Permian and Cretaceous extinctions were responsible for removing a large percentage of organisms from the planet. How do these extinctions contribute to the biodiversity we see today?
How many domains do all organisms fall under?
Three domains that all organisms fall under
What happens when two species evolve separately?
the longer two species have been evolving separately, the greater the number of genetic differences there are
What happens to species that survive after extinction?
Species that remain after the extinction are able to radiate, new adaptations arise, and these produce the diversity seen today.
Which is more closely related to plants or animals?
fungi are more closely related to plants than animals
Is the endosymbiont's genome related to the nuclear genome?
The genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.
How does mass extinction affect the environment?
Mass extinction can remove ecologically dominant groups, paving the way for new or previously minor groups to diversify.
How many times has the mass extinction occurred?
Mass extinctions have occurred five times in Earth's history. The end Permian and Cretaceous extinctions were responsible for removing a large percentage of organisms from the planet. How do these extinctions contribute to the biodiversity we see today?
What is the divergence of two populations from a common ancestor?
Speciation is the divergence of two populations from a common ancestor. How does it contribute to biological diversity?
What happens to species that survive after extinction?
Species that remain after the extinction are able to radiate, new adaptations arise, and these produce the diversity seen today.
Does speciation affect diversity?
Speciation has no effect on biological diversity.
Can species that have gone extinct re-evolve?
Species that have gone extinct are able to re-evolve from the ancestors that survived the extinction.
Can a nuclear genome evolve?
For organelles like chloroplasts, no mutations can occur or photosynthesis would stop and the organism would die. The nuclear genome can accumulate mutations, so it can continue to evolve.