The Number of Species Within a Community Is Usually Greatest

question 31

Multiple Choice

The number of species within a community is usually greatest when

• A)no disturbance occurs.
• B)a low frequency of disturbance occurs.
• C)an intermediate frequency of disturbance occurs.
• D)a high rate of disturbance occurs.

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Definitions:

Innate Behaviors

Instinctive actions and reactions that organisms are born with, not learned through experience, such as reflexes or fixed-action patterns.

Haplodiploidy

A mechanism through which sex is determined by the number of copies of each chromosome that an individual receives. Offspring formed from the fertilization of an egg by a sperm (that is, diploids) are female; those formed from unfertilized eggs (that is, haploids) are male.

Eusocial Behavior

The highest level of social organization, characterized by cooperative brood care, division of labor, and overlapping generations within a colony of animals.

Inclusive Fitness

Describes an individual’s combined fitness, including its own reproduction as well as any increase in the reproduction of its relatives due specifically to its own actions.