Exam 17: Communities and Ecosystems

MATCHING The figure below refers to a food chain in a tallgrass prairie.Examine it and answer the questions by matching each letter with the number with which it best corresponds. -organism situated at the base of the energy pyramid

Which of the following is true of predation?

Which of the following is a TRUE statement concerning ecosystems?

In a natural community,the primary consumers are

An array of organisms together with their physical environment is which of the following?

The monarch butterfly is poisonous to birds and so birds avoid eating them.Viceroy butterflies look very similar to monarch butterflies but are not poisonous.Because they look like monarch butterflies,birds also do not eat viceroy butterflies.This is an example of

Carbon dioxide in the atmosphere

Nitrogen gas is first converted into ___ by certain___ before it enters the land nitrogen cycle.

Which of the following is NOT characteristic of parasites?

Which of the following structures would be most attractive to a fire ant?

A relationship which benefits flow both ways between the interacting species is

The keystone species in a Pacific Northwest Old Growth Forest

In contrast to predation,a parasite usually

Decomposers perform their recycling efforts on organisms

Most of the water vapor in the earth's atmosphere comes from evaporation from

Which of the following statements is FALSE?

Classification.Answer the questions in reference to the five trophic categories of an ecosystem listed below. a.producer b.herbivore c.carnivore d.detritivore e.decomposer -spotted owls eating mice

In most land ecosystems,___ food chains are most common.

Classification.Answer the questions in reference to the five trophic categories of an ecosystem listed below. a.producer b.herbivore c.carnivore d.detritivore e.decomposer -primary consumers

Which of the following represents nitrification?