PLPA 2003 Final Exam Questions and
answers graded A+
Fungi - correct answer ✔✔ what biotic disease causes the most damage to plants
Environment, Host, Pathogen - correct answer ✔✔ what 3 components are required for disease
to occur
Immune system - correct answer ✔✔ what do plants lack that humans have
Neolithic revolution - correct answer ✔✔ what caused increased plant disease, dispersal
gradient, plant density, lowered plant diversity and irrigation
Theophrastus - correct answer ✔✔ who was the father of botany
Coffee rust - correct answer ✔✔ what is a fungal pathogen that causes severe defoliation even
death, devastated production in Sri Lanka and is the reason why English drink tea
Tulipmania - correct answer ✔✔ in this period there were people paying lots of money in hope
to resell these flowers due to their beautiful color variation, occurred in the Netherlands
Anton De Bary - correct answer ✔✔ who is the father of Plant Pathology and inoculated
potatoes
Chemical control - correct answer ✔✔ Pierre Marie Alexis Millardet discovered what relating to
grapes, developed a solution of copper sulfate, lime and water (Bordeaux Mixture), still used
widely today
, Stem Rust - correct answer ✔✔ this fungal pathogen affects wheat and has a narrow host
range, thrives well in wet climates, requires 2 different plant species to complete sexual life
cycle, plants can host thousands of pustules, each containing thousands of spores to be
dispersed through air currents
Robigus - correct answer ✔✔ The Roman Rust God
Robigalla - correct answer ✔✔ This celebration was used to bless the forthcoming growing
seasons and protect the crop, rust colored dogs were sacrificed
Elvin Stakman - correct answer ✔✔ this man worked with trying to understand the stem rust
pathogen but resistance could not be met due to genetic variation
Harold Flor - correct answer ✔✔ this man proposed gene to gene concept, allowed plant to
detect presence of pathogen, controlled death of attacked plant cell, prevents spreading, was
only effective against biotrophic pathogens
Barberry - correct answer ✔✔ what bush was eradicated to prevent stem rust
Norman Borlaug - correct answer ✔✔ who helped develop new dwarf varieties of wheat via
shuttle breeding, increased Mexico's crop exponentially, 1 billion people saved from starvation,
and won the Nobel Peace Prize in 1970
UG99 - correct answer ✔✔ what new pathogen orginated Uganda in 1999, 85% of worldwide
wheat cultivars have no resistance, hasn't reached yet N. America or Europe/Asia
Late Blight of Potato - correct answer ✔✔ devastated the Irish population, is a fungal-like
pathogen, infects potato and tomatoes, thrives in wet conditions and high humidity, tends to
answers graded A+
Fungi - correct answer ✔✔ what biotic disease causes the most damage to plants
Environment, Host, Pathogen - correct answer ✔✔ what 3 components are required for disease
to occur
Immune system - correct answer ✔✔ what do plants lack that humans have
Neolithic revolution - correct answer ✔✔ what caused increased plant disease, dispersal
gradient, plant density, lowered plant diversity and irrigation
Theophrastus - correct answer ✔✔ who was the father of botany
Coffee rust - correct answer ✔✔ what is a fungal pathogen that causes severe defoliation even
death, devastated production in Sri Lanka and is the reason why English drink tea
Tulipmania - correct answer ✔✔ in this period there were people paying lots of money in hope
to resell these flowers due to their beautiful color variation, occurred in the Netherlands
Anton De Bary - correct answer ✔✔ who is the father of Plant Pathology and inoculated
potatoes
Chemical control - correct answer ✔✔ Pierre Marie Alexis Millardet discovered what relating to
grapes, developed a solution of copper sulfate, lime and water (Bordeaux Mixture), still used
widely today
, Stem Rust - correct answer ✔✔ this fungal pathogen affects wheat and has a narrow host
range, thrives well in wet climates, requires 2 different plant species to complete sexual life
cycle, plants can host thousands of pustules, each containing thousands of spores to be
dispersed through air currents
Robigus - correct answer ✔✔ The Roman Rust God
Robigalla - correct answer ✔✔ This celebration was used to bless the forthcoming growing
seasons and protect the crop, rust colored dogs were sacrificed
Elvin Stakman - correct answer ✔✔ this man worked with trying to understand the stem rust
pathogen but resistance could not be met due to genetic variation
Harold Flor - correct answer ✔✔ this man proposed gene to gene concept, allowed plant to
detect presence of pathogen, controlled death of attacked plant cell, prevents spreading, was
only effective against biotrophic pathogens
Barberry - correct answer ✔✔ what bush was eradicated to prevent stem rust
Norman Borlaug - correct answer ✔✔ who helped develop new dwarf varieties of wheat via
shuttle breeding, increased Mexico's crop exponentially, 1 billion people saved from starvation,
and won the Nobel Peace Prize in 1970
UG99 - correct answer ✔✔ what new pathogen orginated Uganda in 1999, 85% of worldwide
wheat cultivars have no resistance, hasn't reached yet N. America or Europe/Asia
Late Blight of Potato - correct answer ✔✔ devastated the Irish population, is a fungal-like
pathogen, infects potato and tomatoes, thrives in wet conditions and high humidity, tends to
