ENTM 3190 University of Manitoba Autumn 2025 Questions
With Complete Solutions
% of described species that are insects Correct Answers %73
% Of pest species Correct Answers >1%
% of Serious pest species Correct Answers ~0.1%
% of species that are insects Correct Answers %53
Acute toxicity Correct Answers -Illness or death from single
dose/exposure of a toxicant
-Can occur during production or application of insecticides if
not handled safely
Adult Insect's main function Correct Answers Reproduction
and Dispersal
Aedeagus Correct Answers Copulatory organ of the male
Age distribution Correct Answers Proportion of individuals in
different age groups of developmental stages in a population
Aggregated dispersion pattern Correct Answers -Clumped
individuals
-Most common in nature because resources are rarely uniformly
available across a landscape
Agroinfection Correct Answers Method of innoculating a
seedling with a virus
,Alkylating poisons (Insecticide) Correct Answers Deactivates
enzymes, preventing the synthesis of nuclic acids
Allelochemical Antixenosis Correct Answers Increases
production of plant allomones, or decreases the production of
kairomones, reducing the chance that insects will select the plant
as suitable
Allelochemicals Correct Answers Substances produced by
plants that prevent or limit damage by herbivores
-Benefits emitter of the signal and may also benefit surrounding
plants
Allomones Correct Answers Allelochemical
-Produce negative response in insects
-repellents, deterrents, toxins
Ametabolous development Correct Answers -No
metamorphosis
-Little or no change between molts
-Observed in wingless insects
Antibiosis (Resistence mechanism) Correct Answers -The most
sought-after form of genetic resistance by plant breeders
-Impairs an insect's metabolic processes from the consumption
of plant metabolites
Arthropods Correct Answers o Segmented bodies
o Bilateral symmetry
o Paired, segments appendages
,o Chitinous exoskeleton
o Dorsal heart with open circulatory system
o Ventral nerve cord
Asexual reproduction (Parthenogenesis) Correct Answers -
Mating not required
-Unfertilized eggs become female clones
-Males may be produced through sexual reproduction
Bacillus thuringiensis (Bt) Correct Answers A naturally
occurring soil bacterium that produces a protein that kills many
pests
-3 strains developed: kurstaki (Btk), israelensis (Bti), and
aizawai
Bacterial insecticides Correct Answers -Most popular group of
microbial insecticides
-Spore forming bacteria most important for insect suppression
-Bacillus thuringiensis (Bt) most utilized species
Biochemical Insecticides Correct Answers Insecticidal
compunds with natural origins
-Do not kill insects outright
-Little to no effect on non-target organisms, degrade rapidly,
low application rates required
-Suffocating agents, desiccants, coatings, systemic acquired-
response inducers, and insect growth regulators
Biomagnetification Correct Answers The accumulation and
concentration of non-metabolized residues in progressively
higher trophic levels
, -Results from use of pesticides that do not degrade
Biopesticide Registration Correct Answers -Overseen by
PMRA
-Under jurisdiction of the Pest Control Products Act (PCPA)
-Review times shorter relative to conventional pesticides
-Exempt from most cost recovery application fees
Biopesticides Correct Answers Substances with insecticidal
properties derived from natural materials (animals, plants,
microorganisms, and minerals)
Biopesticides differ from conventional pesticides in several
ways: Correct Answers -Unique modes of action (e.g. may
contain living organisms)
-Narrower pest ranges
-Lower volumes required
-Active ingredients are naturally occuring
Biotic potential Correct Answers Theoretical growth rate under
unconstrained environmental conditions (exponential growth)
Botanicals Correct Answers -Insecticide class
-Substances derived directly from plants or plant products
-Typically too expensive for agriculture, useful for small scale
applications
Bt Advantages Correct Answers -Toxins expressed are specific
to Dipteran insects
-Kills crucial larval stage
-Cheap, easy to produce and handle
With Complete Solutions
% of described species that are insects Correct Answers %73
% Of pest species Correct Answers >1%
% of Serious pest species Correct Answers ~0.1%
% of species that are insects Correct Answers %53
Acute toxicity Correct Answers -Illness or death from single
dose/exposure of a toxicant
-Can occur during production or application of insecticides if
not handled safely
Adult Insect's main function Correct Answers Reproduction
and Dispersal
Aedeagus Correct Answers Copulatory organ of the male
Age distribution Correct Answers Proportion of individuals in
different age groups of developmental stages in a population
Aggregated dispersion pattern Correct Answers -Clumped
individuals
-Most common in nature because resources are rarely uniformly
available across a landscape
Agroinfection Correct Answers Method of innoculating a
seedling with a virus
,Alkylating poisons (Insecticide) Correct Answers Deactivates
enzymes, preventing the synthesis of nuclic acids
Allelochemical Antixenosis Correct Answers Increases
production of plant allomones, or decreases the production of
kairomones, reducing the chance that insects will select the plant
as suitable
Allelochemicals Correct Answers Substances produced by
plants that prevent or limit damage by herbivores
-Benefits emitter of the signal and may also benefit surrounding
plants
Allomones Correct Answers Allelochemical
-Produce negative response in insects
-repellents, deterrents, toxins
Ametabolous development Correct Answers -No
metamorphosis
-Little or no change between molts
-Observed in wingless insects
Antibiosis (Resistence mechanism) Correct Answers -The most
sought-after form of genetic resistance by plant breeders
-Impairs an insect's metabolic processes from the consumption
of plant metabolites
Arthropods Correct Answers o Segmented bodies
o Bilateral symmetry
o Paired, segments appendages
,o Chitinous exoskeleton
o Dorsal heart with open circulatory system
o Ventral nerve cord
Asexual reproduction (Parthenogenesis) Correct Answers -
Mating not required
-Unfertilized eggs become female clones
-Males may be produced through sexual reproduction
Bacillus thuringiensis (Bt) Correct Answers A naturally
occurring soil bacterium that produces a protein that kills many
pests
-3 strains developed: kurstaki (Btk), israelensis (Bti), and
aizawai
Bacterial insecticides Correct Answers -Most popular group of
microbial insecticides
-Spore forming bacteria most important for insect suppression
-Bacillus thuringiensis (Bt) most utilized species
Biochemical Insecticides Correct Answers Insecticidal
compunds with natural origins
-Do not kill insects outright
-Little to no effect on non-target organisms, degrade rapidly,
low application rates required
-Suffocating agents, desiccants, coatings, systemic acquired-
response inducers, and insect growth regulators
Biomagnetification Correct Answers The accumulation and
concentration of non-metabolized residues in progressively
higher trophic levels
, -Results from use of pesticides that do not degrade
Biopesticide Registration Correct Answers -Overseen by
PMRA
-Under jurisdiction of the Pest Control Products Act (PCPA)
-Review times shorter relative to conventional pesticides
-Exempt from most cost recovery application fees
Biopesticides Correct Answers Substances with insecticidal
properties derived from natural materials (animals, plants,
microorganisms, and minerals)
Biopesticides differ from conventional pesticides in several
ways: Correct Answers -Unique modes of action (e.g. may
contain living organisms)
-Narrower pest ranges
-Lower volumes required
-Active ingredients are naturally occuring
Biotic potential Correct Answers Theoretical growth rate under
unconstrained environmental conditions (exponential growth)
Botanicals Correct Answers -Insecticide class
-Substances derived directly from plants or plant products
-Typically too expensive for agriculture, useful for small scale
applications
Bt Advantages Correct Answers -Toxins expressed are specific
to Dipteran insects
-Kills crucial larval stage
-Cheap, easy to produce and handle
