For a species with a type ii curve, less than % of individuals survive for 50% of the maximum life span.

a) 10 b) 12 c) 13 d) 15

Explanation:

A survivorship curve is the representation of the number of individuals at any given age.  The survivorship curve formed of three types which are: TypeI, Type II and Type III.

Type II survivorship curve is the curve formed for those species in which the mortality rate of the organism remains constant throughout their lifetime that is the death of the organism is not dependent on their age.

Although their mortality rate is independent of their age they are not able to survive their maximum lifespan due to predation and competition. Only 10% of organisms survive their maximum lifespan.

Thus, 10% is the correct answer.

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