<Ul> <Li> Type I or convex curves are characterized by high age - specific survival probability in early and middle life , followed by a rapid decline in survival in later life . They are typical of species that produce few offspring but care for them well , including humans and many other large mammals . </Li> <Li> Type II or diagonal curves are an intermediate between Types I and III , where roughly constant mortality rate / survival probability is experienced regardless of age . Some birds and some lizards follow this pattern . </Li> <Li> Type III or concave curves have the greatest mortality ( lowest age - specific survival ) early in life , with relatively low rates of death ( high probability of survival ) for those surviving this bottleneck . This type of curve is characteristic of species that produce a large number of offspring ( see r / K selection theory ) . This includes most marine invertebrates . For example , oysters produce millions of eggs , but most larvae die from predation or other causes ; those that survive long enough to produce a hard shell live relatively long . </Li> </Ul>
<Ul> <Li> Type I or convex curves are characterized by high age - specific survival probability in early and middle life , followed by a rapid decline in survival in later life . They are typical of species that produce few offspring but care for them well , including humans and many other large mammals . </Li> <Li> Type II or diagonal curves are an intermediate between Types I and III , where roughly constant mortality rate / survival probability is experienced regardless of age . Some birds and some lizards follow this pattern . </Li> <Li> Type III or concave curves have the greatest mortality ( lowest age - specific survival ) early in life , with relatively low rates of death ( high probability of survival ) for those surviving this bottleneck . This type of curve is characteristic of species that produce a large number of offspring ( see r / K selection theory ) . This includes most marine invertebrates . For example , oysters produce millions of eggs , but most larvae die from predation or other causes ; those that survive long enough to produce a hard shell live relatively long . </Li> </Ul>
what type of survivorship curve is line a representative of
what type of survivorship curve is line a representative of
Type II
Type II