Question 1

Organisms such as earthworms and crabs,which dine on small particles of organic matter,are called ____.

Accepted Answer

A)  herbivores 
B)  carnivores 
C)  omnivores 
D)  decomposers 
E)  detritivores 
A)  herbivores 
B)  carnivores 
C)  omnivores 
D)  decomposers 
E)  detritivores

Question 2

Gross primary productivity refers to the total ____.

Accepted Answer

A)  quantity of solar energy available to the ecosystem in a given period of time 
B)  quantity of solar energy reaching a given area of the ecosystem 
C)  energy captured initially by the producers 
D)  energy used by the heterotrophs of the ecosystem in a given period of time 
E)  energy used by the producers for their growth and reproduction 
A)  quantity of solar energy available to the ecosystem in a given period of time 
B)  quantity of solar energy reaching a given area of the ecosystem 
C)  energy captured initially by the producers 
D)  energy used by the heterotrophs of the ecosystem in a given period of time 
E)  energy used by the producers for their growth and reproduction

Question 3

Denitrification ____.

Accepted Answer

A)  converts ammonium to nitrates 
B)  reduces nitrates to nitrites 
C)  reduces ammonia to ammonium 
D)  converts atmospheric nitrogen to ammonia 
E)  converts nitrates to nitrogen gas 
A)  converts ammonium to nitrates 
B)  reduces nitrates to nitrites 
C)  reduces ammonia to ammonium 
D)  converts atmospheric nitrogen to ammonia 
E)  converts nitrates to nitrogen gas

Question 4

Natural underground reservoirs consisting of layers of sand or porous rock that can hold water are called _______________________.

Accepted Answer

The answer of Natural underground reservoirs consisting of layers of...

Exam 46: Ecosystems

Organisms such as earthworms and crabs,which dine on small particles of organic matter,are called ____.

Gross primary productivity refers to the total ____.

Denitrification ____.

Natural underground reservoirs consisting of layers of sand or porous rock that can hold water are called _______________________.

Invitation to Biology

Life's Chemical Bases

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizing Information about Species

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

The Biosphere

Human Impacts on the Biosphere

Filters