3.
One way to express some aspects of the age distribution characteristics of a population is through
a survivorship curve. The given graph shows the percentage of maximum life span and survival per
thousand of three organisms i.e., humans, Hydra and oyster.
Given below are the steps involved in two processes P and Q of an assay.
i. Explain the principle involved in the assay and identify the processes P and Q.
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ii. Explain the significance of the two processes of the assay.
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2.
i. The type I, type II and type III survivorship curves in the
given graph, belong to which organisms respectively?
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ii. Explain why, these three organisms have different
survivorship curves.
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Survivorship is defined as percentage of an
original population that survives to a given
age.
