SPECIATION
When a population becomes separated and develops into a new species, what is this process called?
What is speciation?
A population growing without limiting factors will show what type of curve?
What is a J curve (exponential growth)?
Which type of strategist has many offspring, little parental care, and short life expectancy?
What is an r-strategist?
Which of the following is NOT density-dependent: disease, competition, predators, or storms?
What are storms?
A population pyramid that is very wide at the bottom represents what?
What is an expanding population?
The Kaibab squirrel became its own species due to physical separation by the Grand Canyon. What type of speciation is this?
What is geographic isolation?
What causes a J-curve to shift into an S-curve?
What are limiting factors?
Which survivorship curve has most individuals living to old age?
What is Type 1?
Over-exploitation(Hunting) of animals is likely to cause what outcome?
What is species extinction?
A population pyramid that narrows at the base suggests fertility has done what?
What is decreased?
A species that reproduces at different times of the year is separated by what type of isolation?
What is temporal isolation?
In logistic growth, the population levels off at what point?
What is the carrying capacity?
In survivorship curves, which type represents organisms that die mostly in early life?
What is Type III?
What term describes the number of offspring an organism is capable of producing?
What is fecundity?
A population pyramid with a narrow top and a very broad base indicates what about the country’s birth rate?
What is a high birth rate?
When two species compete until one is eliminated from a niche, what principle explains this?
What is a J curve (exponential growth)?
Long life expectancy usually correlates with all of the following except what?
What is rapid reproduction?
Give an example of an r-strategist animal.
What is an insect (or any fast-reproducing small organism)?
Animals of the same species share what essential reproductive trait?
They can interbreed and produce fertile offspring.
A population with equal numbers in most age groups is considered what?
What is stable?
Two populations cannot interbreed because their reproductive organs don’t match. What type of isolation is this?
What is mechanical isolation?
When a population exceeds the carrying capacity temporarily before dropping back down, what is this phenomenon called?
What is an overshoot (often followed by a population crash)?
Humans usually follow which survivorship curve?
What is Type I?
What term describes the ability of organisms to reproduce successfully?
What is fertility?
A population with a shrinking base and larger older population is described as what?
What is a declining population?