Question 1

Which of the following statements about food chains is true? Typically

Accepted Answer

A)  food chains rarely involve more than four trophic levels. 
B)  omnivores are scarce. 
C)  one species can occur in many food chains. 
D)  green plants are at the base of food chains. 
E)  All of the answers are true. 
A)  food chains rarely involve more than four trophic levels. 
B)  omnivores are scarce. 
C)  one species can occur in many food chains. 
D)  green plants are at the base of food chains. 
E)  All of the answers are true.

Question 2

Behind tropical rainforests, what is the second most productive ecosystem on earth in relation to their annual cumulative biomass?

Accepted Answer

A)  Estuaries and reefs 
B)  Tropical seasonal forest 
C)  Cultivated, agricultural areas 
D)  Temperate deciduous forest 
E)  Woodland 
A)  Estuaries and reefs 
B)  Tropical seasonal forest 
C)  Cultivated, agricultural areas 
D)  Temperate deciduous forest 
E)  Woodland

Question 3

Choose the term for which a definition requires reference to both biotic and abiotic interactions.

Accepted Answer

A)  Population. 
B)  Ecosystem. 
C)  Symbiosis. 
D)  Habitat. 
E)  Community. 
A)  Population. 
B)  Ecosystem. 
C)  Symbiosis. 
D)  Habitat. 
E)  Community.

Question 4

All organisms are either

Accepted Answer

A)  autotrophs or heterotrophs. 
B)  photosynthetic or chemosynthetic. 
C)  heterotrophs or chemosynthetic. 
D)  photosynthetic or autotrophic. 
E)  herbivores or carnivores. 
A)  autotrophs or heterotrophs. 
B)  photosynthetic or chemosynthetic. 
C)  heterotrophs or chemosynthetic. 
D)  photosynthetic or autotrophic. 
E)  herbivores or carnivores.

Question 5

Which of the following is NOT a basic pattern exhibited by all food webs?

Accepted Answer

A)  Omnivores typically feed on organisms in adjacent trophic levels. 
B)  Food chains typically have only three or four levels. 
C)  Food webs typically have two to three omnivores per top predator. 
D)  Omnivores are usually scarce in number. 
E)  Although a small number of subgroups may exist, trophic interactions occur only within a particular habitat. 
A)  Omnivores typically feed on organisms in adjacent trophic levels. 
B)  Food chains typically have only three or four levels. 
C)  Food webs typically have two to three omnivores per top predator. 
D)  Omnivores are usually scarce in number. 
E)  Although a small number of subgroups may exist, trophic interactions occur only within a particular habitat.

Exam 45: Ecosystems

Which of the following statements about food chains is true? Typically

Behind tropical rainforests, what is the second most productive ecosystem on earth in relation to their annual cumulative biomass?

Choose the term for which a definition requires reference to both biotic and abiotic interactions.

All organisms are either

Which of the following is NOT a basic pattern exhibited by all food webs?

Nature of Molecules

Biomolecules

The Chemistry of Life

Functioning Cells

Movement Across Membranes

Harvesting Energy

Cells, Tissues and Signals

Cell Division

Inheritance

Genes, Chromosomes and Dna

The Genetic Code

Gene Expression

Genomes, Mutation and Cancer

Viruses

Genetic Engineering and Biotechnology

Reproduction, Growth and Development of Flowering Plants

Structure of Plants

Plant Nutrition, Transport and Adaptation to Stress

Plant Hormones and Growth Responses

Animal Reproduction

Animal Development

Homeostasis: Water, Solutes and Excretion

Gas Exchange in Animals

Circulation

Metabolism, Temperature Regulation and Environmental Stress

Animal and Human Nutrition

Innate Defences and the Immune System

Hormonal Control in Animals

Nervous Systems

Animal Movement

Animal Behaviour

Evolving Life

Evolving Earth

Mechanisms of Evolution

Bacteria

The Protists

Plants

Fungi

Simple Animals: Sponges to Flatworms

Annelids, Molluscs, Nematodes and Arthropods

Echinoderms and Chordates

Australian Biota

Population Ecology

Living in Communities

Human Impacts

Filters