Exam 15: Parasitism and Mutualism

What would you predict would happen to a plant after being invaded by Rhizobium bacteria?

You see a killifish jumping around on the surface before it is consumed by a bird.You conclude the fish was

Plants often react to attacks on their leaves,stems,fruit,or seeds by forming abnormal structures called ________.

Microparasites are usually characterized by

A heavy load of parasites is termed a(n)________.

Which of the following symbiotic mutualisms involves a fungus?

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

Nitrogen is important in the mutualism between legume plants and Rhizobium bacteria.

Plant parasites that are photosynthetic but draw water and nutrients from their host plant are referred to as

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

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

What reward do many organisms receive for pollinating flowers?

Which of the following mutualistic relationships have the largest impact on population dynamics?

Parasites are always transmitted between hosts via an intermediate vector organism.

Relatively large parasites,such as viruses,bacteria,and protozoans,are referred to as ________.

Which of the following are always photosynthetic?

The relationship between ants and acacias represents a defensive mutualism.

Symbiosis is an interaction between two species that is beneficial to both species.

Which of the following is an ectoparasite?

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