Exam 13: Species Interactions,population Dynamics,and Natural Selection

The range of physical and chemical conditions under which each species can persist (survive and reproduce)and the array of essential resources it utilizes are referred to as its ecological ________.

When the population size of a prey species increases,the birthrate of a predator species should also increase.

________ occurs when two species undergo reciprocal evolutionary change through natural selection.

Mycorrhizal fungi have a mutually beneficial relationship with plants in environments with soils that

Most interspecific interactions are exclusive,involving only two species.

As the population of a predator increases,the

The flower of an orchid species is pollinated by a species of wasp that is deceived by the orchid into thinking it is mating with another wasp.

When the relationship between two interacting species is detrimental to the populations of both species,the interaction is referred to as

When a species of bird preys upon the seeds of a plant and favors the smallest seeds,

When one species reduces or adversely affects the population of another,but the affected species has no influence in return,the relationship is referred to as ________.

Predation always has a negative effect on the individual prey.

The interaction between two species usually influences all individuals within the respective populations equally.

The process in which a network of species undergoes reciprocal evolutionary change through natural selection is referred to as ________.

In most flowering plants,successful reproduction requires that ________ (male gametes)from one individual be transported to the female organ (stigma)of another flowering individual.

The relationship between nectar-producing flowers and nectar-feeding birds is a mutually beneficial interaction.

Under certain conditions,________ fungi live in the roots of many species of plants and have a mutually beneficial relationship with the plants.

In a parasitic relationship between two species,the host species usually dies.

In most plant-pollinator interactions,plants species are pollinated by

Parasitoidism is a form of mutualism.

Two species of cattail (Typha)live in shallow water along the shoreline of ponds.Although T.agustifolia can live by itself in water 0-20 cm deep,in the presence of T.latifolia,it occurs only in water > 20 cm deep,whereas T.latifolia occurs in shallower water.In this example,T.agustifolia is limited by competition exploiting its