Population Ecology Concepts Quiz

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What do survivorship curves show?

Age structure of a population

Likelihood of individuals surviving to various ages (correct)

Habitat fragmentation effects on populations

Rate of population growth

What is the main difference between type I, type II, and type III survivorship curves?

Age at which most deaths occur (correct)

Method of reproduction

Rate of population growth

Type of habitat preferred by the species

How does resource allocation impact life history?

Resource allocation only impacts population size

It affects the species' mating habits

It influences growth, reproduction, and survival traits (correct)

Resource allocation is not related to life history

What does a life table measure?

Survivorship rates of a cohort Signup and view all the answers

What factors affect the size of a population?

Carrying capacity and birth rates Signup and view all the answers

How does habitat fragmentation contribute to extinction risk?

Creates isolated patches leading to decreased population viability Signup and view all the answers

What is the significance of the per capita growth rate (r) in a population?

It reflects the rate at which the population is growing without accounting for limiting factors. Signup and view all the answers

How does resource allocation impact an organism's life history?

It can alter the timing of reproduction and survival strategies. Signup and view all the answers

What are the main parameters that define logistic population growth?

Death rate and carrying capacity Signup and view all the answers

In what way do density-dependent factors influence population growth?

They become more influential as population density increases. Signup and view all the answers

Differentiate between r-selected and k-selected species in terms of their life history strategies.

r-selected species invest heavily in few offspring while k-selected species produce many offspring with little parental care. Signup and view all the answers

How can habitat fragmentation lead to extinction risk for populations?

It restricts access to resources and reduces breeding opportunities. Signup and view all the answers

What is the primary difference between exponential and logistic population growth?

Exponential growth occurs when resources are unlimited, while logistic growth occurs when resources are limited. Signup and view all the answers

How does metapopulation differ from a single population?

Metapopulation is made up of multiple small populations that interact, while a single population is isolated. Signup and view all the answers

What factors contribute to the age structure of a population?

Birth and death rates, and past demographic trends Signup and view all the answers

How does density-dependent regulation impact population size?

It restricts population size when density is low and promotes growth when density is high. Signup and view all the answers

What is the primary difference between r-selected and k-selected species in terms of life history strategies?

r-selected species are adapted to stable environments with predictable resources, while k-selected species thrive in unpredictable or rapidly changing environments. Signup and view all the answers