Exam 35: An Interactive Living World 2: Communities in Ecology

Which of the following happens when a new island arises from the ocean and life begins to colonize the island?

On a hike along the desert slope of the Sierra Nevada Mountains in California,you notice that there is an abundance of pinyon pine and juniper trees.We would identify these two plants as:

Refer to the figure below, and then answer the following question(s). -The graph indicated by a "1" demonstrates which principle of community ecology?

What do we call the first species that invade a new island that has risen from the ocean?

A community is a more inclusive category than a population.

The process in succession in which the actions of early-arriving species enable the success of later-arriving species is:

For a parasite living in human skin,the person is the:

Biodiversity is essential for all communities to survive.

A landslide in the Oregon Cascades causes all the soil in a 30-meter by 300-meter section of a mountain to fall away,taking the trees and their roots and all other vegetation with it.Within three years,however,lichens and some small herbaceous plants can be seen on the surface of the remaining rock.This is an example of:

A botanist has found that the giant saguaro,Carnegiea gigantea,lives in the Sonoran Desert below the freeze line and in some very dry regions (such as Yuma)to the eastern edge of Arizona.She has described the ________ of saguaro.

Climax communities in succession are those that persist for long periods of time.

In a commensal relationship,one species benefits while the other one is harmed.

A mutualistic relationship involves two species who both benefit from the relationship.

If two species of woodpeckers eat two different kinds of beetle larvae on pine trees in a forest,we would identify that as:

A small number of species that are abundant in a given community are called:

A harmless moth that resembles a poisonous wasp is an example of:

Throughout the story of the evolution of parasites,we frequently see a shift from parasites that seriously harmed their hosts,to those who evolve benign,nearly commensal relationships with their hosts.Evaluate why parasites are more likely to evolve "live and let live" relationships while predators do not.

An accidental spill of a pesticide locally wiped out the most abundant species of butterfly in coastal California.Most of the bird species in the area had fed on this butterfly,but they switched prey to moths,and thus the birds showed only a small decrease in population size.The butterflies were a/an:

If we find an orange plant that lacks chlorophyll living on a green plant,it is likely that the orange plant is a:

When faced with a threat,gopher snakes and bull snakes,who have markings similar to rattlesnakes,will "rattle" their tails in brush to sound like a rattlesnake.In this case,the gopher and bull snakes are mimics,and the rattlesnake is the: