M6 -1 Ecology 2

What is the definition of population in ecology?

• Organisms of the same kind living in the same place at the same time

• The number of individuals of a species in the same place at the same time

• The number of individuals per unit of area

• The distribution of individuals within a habitat

What is population density?

• The number of individuals of a species in the same place at the same time

• The distribution of individuals within a habitat

• The number of individuals per unit of area

• The age structure of a population

What is the carrying capacity of a population?

• The maximum number of offspring that an individual can produce

• The number of individuals that leave a population

• The number of individuals that die within a population

• The largest number of individuals that can be supported without harm to the given individual and its environment

What is the difference between r-strategists and K-strategists?

• r-strategists produce many offspring with little parental care, while K-strategists produce few offspring with extensive parental care

• r-strategists produce few offspring with extensive parental care, while K-strategists produce many offspring with little parental care

• r-strategists produce many offspring with extensive parental care, while K-strategists produce few offspring with little parental care

• r-strategists produce few offspring with little parental care, while K-strategists produce many offspring with extensive parental care

What is the difference between primary succession and secondary succession?

• Primary succession occurs when an established ecosystem is disturbed, while secondary succession occurs when new land is formed

• Primary succession occurs when new land is formed, while secondary succession occurs when an established ecosystem is disturbed

• Primary succession occurs when an ecosystem undergoes gradual change, while secondary succession occurs when an ecosystem undergoes catastrophic change

• Primary succession occurs when an ecosystem undergoes catastrophic change, while secondary succession occurs when an ecosystem undergoes gradual change

What is a survivorship curve?

• A graph of the number of individuals surviving at each age structure interval versus time

• A graph of the number of individuals per unit of area versus time

• A graph of the distribution of individuals within a habitat at a particular point in time

• A graph of the population size over time

What is density-dependent population control?

• Environmental factors that curtail biotic potential

• Environmental factors that do not depend on the number of individuals in a population

• Factors that increase population size

• Factors that decrease population size

What is density-independent population control?

• Environmental factors that curtail biotic potential

• Environmental factors that do not depend on the number of individuals in a population

• Factors that increase population size

• Factors that decrease population size

What is a disturbance in an ecosystem?

• Any significant change to the interactions in an ecosystem

• A change that takes place over a short period of time

• A change that takes place over a long period of time

• The response of an ecosystem to change

What is inertia in relation to ecosystems?

• The way an ecosystem responds to change

• The ability of an ecosystem to resist change

• The rate at which an ecosystem undergoes change

• The stability of an ecosystem