Exam 15: Parasitism and Mutualism

The intimate and protracted association between two or more organisms of different species is referred to as a

A major problem for parasites is gaining access to the host.

The simple Lotka-Volterra models for mutualism describe the dynamics of an obligate interaction in which neither species can survive and reproduce in the absence of the other.

Which of the following is a potential response by a plant host to a parasite?

A mutualism in which two species must live together and cannot survive when apart is referred to as a(n)

Explain how the consumption of seeds or fruit by an animal could result in either parasitism or mutualism.

The mutualistic fungi that can live within the roots of certain plants are called ________.

Myrmecochores are plants that attract ants to their seeds.

Parasites always complete their life cycle in a single host species.

Which of the following types of mutualisms is a defensive mutualism?

Give two examples of mutualisms involving the transfer of nutrients.

The ________ host is the host species in which a parasite becomes an adult and reaches maturity.

Draw a graph that illustrates the impact of one species on the carrying capacity of another according to the Lotka-Volterra models of mutualism.

In a mutualism, the interaction between two species is often more a reciprocal exploitation than a cooperative effort between individuals.

Plants that rely on ants to disperse their seeds are called ________.

Parasites that live on the skin of their host are called ________-parasites.

Some symbiotic mutualisms involve defence against herbivores.

Give two reasons that it can be difficult to detect the effects of mutualism on the population dynamics of species.

Plants benefit from frugivores, which aid in the dispersal of their seeds.

Parasites typically impact host survival but not reproduction.