Exam 12: Species Interactions, population Dynamics, and Natural Selection

The ________ niche is the portion of a fundamental niche in which species can exploit as a result of interactions with other species.

The neurotoxin that Taricha spp.possess to ward off predators is

Urbanization impacts

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

A species of cattail inhabits both deep and shallow water in the absence of a competitor but only shallow water in the presence of it.This is an example of

Which of the following interactions would be considered predation?

An invasive bullfrog consumes a Taricha newt and dies immediately.What can you say about the toxin?

When the interaction is detrimental to the population of both species (- -),it is referred to as ________.

A flower is not ideally matched with a pollinator that visits it daily.Why might that be?

The concept of the niche was initially developed by

What does the following formula represent? dN₁/dt = r1N₁(1 - (N₁ + N₂)/K₁)

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

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 ________.

Hummingbirds are attracted to red flowers with long tubes.What might you predict would happen to flowers if hummingbirds become the predominant species on a remote island?

A food web is a better representation of a community than a food chain because most interactions among organisms

When the trunk or limb of a tree provides the substrate on which an epiphytic orchid grows,the arrangement benefits the orchid,which gets nutrients from the air and moisture from aerial roots,while the tree is unaffected.The relationship is referred to as

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

As predators feed on prey,prey abundances decrease over time.This is predicted to result in a(n)

Predation always has a negative effect on the individual prey.

When individuals of two species interact,the nature of the interaction can be classified qualitatively as positive,negative,or ________.