Crop Protection Reviewer- Agriculture Board Exam (Set 2)

Question of
Yellowing of normally green tissue caused by inadequate light is called
- chlorosis
- Mosaic
- Etiolation
- Blight
Question of
Disproved the” theory of spontaneous generation”
- Louis Pasteur
- Julius Kuhn
- Franz Unger
- Thomas Burill
Question of
Wrote the “Philippine Economic Plant Disease”
- Millardet
- Ocfemia
- Exconde
- Reinking
Question of
Rotting of seedling prior to emergence or rotting of seedling stems at an area just above the soil is known as
- Callus
- Damping off
- Rosetting
- Blast
Question of
Symptoms of plant disease include the following , except
- Blight
- Mosaic
- Mummified
- Mycelium
Question of
A science that deals with the nature ,cause and control of plant disease
- Plant pathology
- Plant Physiology
- Plant Taxonomy
- Weed Science
Question of
An extensive ,usually sudde4n death of host tissue
- Curl
- Spot
- Blight
- Canker
Question of
The disintegration and decomposition of host tissue
- Shot hole
- Wilting
- Etiolation
- Rotting
Question of
Hypoplastic symptoms includes the following , except
- Stunting
- Mottle/Mosaic
- Rosetting
- Gall formation
Question of
A symptom which effects on the distant and uninvaded plant parts
- Secondary symptoms
- Primary symptoms
- Localized symptoms
- Histological symptoms
Question of
A localized necrotic area also referred to as lesion
- Canker
- Spot
- Wilting
- Mottling
Question of
Air pollutant that cause plant disease includes the following , except
- Ethylene
- NO2
- Peroxyacetyl nitrate
- CaCO3
Question of
A term for plant disease which occur on leaves fruits that undergo prolonged exposure to high temperatures and bright sunlight
- Heat necrosis
- Sunscald
- Canker
- Veinclearing
Question of
The major means of spreading air –borne pathogens
- Wind dissemination
- Dissemination by insect
- Dissemination by man
- Dissemination by rain
Question of
The presence of different nuclei in the same mycelium
- Parasexual process
- Mutation
- Heterokaryosis
- Cytoplasmic variation
Question of
Mechanism of variation in fungal plant pathogens includes the following ,except
- Hybridization
- Sexual reproduction
- Mutation
- Transformation
Question of
A spontaneous heritable change is called
- Transduction
- Biotype
- Mutation
- Transformation
Question of
A term which involves extraschromosomal heredity factors
- Mutation
- Cytoplasmic variation
- Heterokaryon
- Parasexual process
Question of
Differ in the host variety they attack although morphologically identical is called
- Physiologic races
- Transduction
- Transformation
- Biotype
Question of
A nematodes feeding only on root hair and root tips is called
- Endoparasites
- Ectoparasites
- Rickettsia
- Migratory endoparasites
Question of
A pathogenic naked RNA entities is
- Viroid
- Virus
- Bacterium
- Fungi
Question of
An obligate intracellular parasites with wavy cell wall
- Protozoa
- Fungi
- Bacterium
- Rickettsia
Question of
Reduction of plant photosynthetic capacity was due to pathogen that attack the
- Leaves
- Stem
- Roots
- Branches
Question of
Unicellular organism which reproduce by binary fission
- Fungi
- Bacteria
- Virus
- Protozoa
Question of
Keeping the pest from becoming a problem is called
- Prediction
- Prevention
- Suppression
- Eradication
Question of
.Insect pest destroy the crops directly through , except
- Suckling plant sap
- Consuming plant tissues
- Decomposing plant tissues
- Transmitting systemic plant disease
Question of
Moths , butterflies and skipper belong to what insect order
- Coleoptera
- Orthoptera
- Lepidoptera
- Homoptera
Question of
An insect order which is considered as a livestock pest
- Thysanoptera
- Diptera
- Orthoptera
- Coleoptera
Question of
A cause of plant disease which is tiny , simple plant commonly called”mold”
- Fungi
- Virus
- Bacteria
- Nematodes
Question of
Probably the most common type of nematodes in the Philippines
- Burrowing nematode
- Spiral nematode
- Sting Nematode
- Root knot nematode
Question of
Distorting and puffing of a leaf due to the unequal development of its sides is called
- Canker
- Curl
- Dieback
- Mosaic
Question of
All are non parasitic causes of plant disease, except
- Mycoplasma
- Excess or deficiency of nutrient
- Air pollutants
- Lack or excess of soil moisture
Question of
Inadequate oxygen in potato results to
- Blossom – end rot
- Silver leaf disease
- Blackheart
- Sunscald
Question of
The detelerious effect of one plant on another is called
- Interference
- Allelopathy
- Competition
- Toxicity
Question of
Asexual reproduction in plants is called
- Parthenogenesis
- Marcotting
- Grafting
- Apoximis
Question of
Exposure to low temperature above freezing is called
- Chilling injury
- Freezing injury
- Cold injury
- Exanthema
Question of
Parasite agent of plant disease which is composed of stable and free ribo-nucleic acids (RNA) that can infect plant cells.
- Virus
- Bacteria
- Viroid
- Mycoplasma
Question of
An organism which can subsist on non – living materials is called
- Facultative parasite
- Obligate parasites
- Migratory parasites
- Parasite
Question of
All are signs of plant diseases ,except
- Mycelium
- Mosaic
- Bacterial ooze
- Phanerogram
Question of
A biennial weed will live for
- One year
- Two years
- Three years
- More than three years
Question of
The term instars refers to the development stage of
- Plants
- Fungi
- Bacteria
- Insect
Question of
Plant disease are vector by
- Wind
- Rain
- Insect
- Man
Question of
Gradual metamorphosis consists of three life stages ,except
- Pupa
- Egg
- Imago
- Nymph
Question of
A pest which occurs on a regular basis for a given crop is called
- Targeted pest
- Opportunistic pest
- Occasional pest
- Key pest
Question of
Means a total removal or deduction of a pest
- Quarantine
- Eradication
- Sanitation
- Regulation
Question of
A herbicide that kill some plant species with little or no injury to others is called
- Contact herbicide
- Systemic herbicide
- Selective herbicide
- Preemergence herbicide
Question of
A susceptible crop planted to attract a pest into a localized area
- Cash crop
- Permanent crop
- Trap crop
- Root crop
Question of
Refers to a pest ‘s ability to repopulate after its natural control has been eliminated by a pesticide applications is called
- Pest resurgence
- Pest occurrence
- Pesticide resistance
- Pest outbreak
Question of
A example of an inorganic pesticide is called
- Pyrethrum
- Rotenone
- Bordeaux mixture
- Organophosphate
Question of
A fungicide which is applied prior to disease infection is called
- Protectant fungicide
- Eradicant fungicide
- Resistant fungicide
- Synthetic fungicide

Crop Protection Reviewer- Agriculture Board Exam (Set 2)

Yellowing of normally green tissue caused by inadequate light is called

Disproved the” theory of spontaneous generation”

Wrote the “Philippine Economic Plant Disease”

Rotting of seedling prior to emergence or rotting of seedling stems at an area just above the soil is known as

Symptoms of plant disease include the following , except

A science that deals with the nature ,cause and control of plant disease

An extensive ,usually sudde4n death of host tissue

The disintegration and decomposition of host tissue

Hypoplastic symptoms includes the following , except

A symptom which effects on the distant and uninvaded plant parts

A localized necrotic area also referred to as lesion

Air pollutant that cause plant disease includes the following , except

A term for plant disease which occur on leaves fruits that undergo prolonged exposure to high temperatures and bright sunlight

The major means of spreading air –borne pathogens

The presence of different nuclei in the same mycelium

Mechanism of variation in fungal plant pathogens includes the following ,except

A spontaneous heritable change is called

A term which involves extraschromosomal heredity factors

Differ in the host variety they attack although morphologically identical is called

A nematodes feeding only on root hair and root tips is called

A pathogenic naked RNA entities is

An obligate intracellular parasites with wavy cell wall

Reduction of plant photosynthetic capacity was due to pathogen that attack the

Unicellular organism which reproduce by binary fission

Keeping the pest from becoming a problem is called

.Insect pest destroy the crops directly through , except

Moths , butterflies and skipper belong to what insect order

An insect order which is considered as a livestock pest

A cause of plant disease which is tiny , simple plant commonly called”mold”

Probably the most common type of nematodes in the Philippines

Distorting and puffing of a leaf due to the unequal development of its sides is called

All are non parasitic causes of plant disease, except

Inadequate oxygen in potato results to

The detelerious effect of one plant on another is called

Asexual reproduction in plants is called

Exposure to low temperature above freezing is called

Parasite agent of plant disease which is composed of stable and free ribo-nucleic acids (RNA) that can infect plant cells.

An organism which can subsist on non – living materials is called

All are signs of plant diseases ,except

A biennial weed will live for

The term instars refers to the development stage of

Plant disease are vector by

Gradual metamorphosis consists of three life stages ,except

A pest which occurs on a regular basis for a given crop is called

Means a total removal or deduction of a pest

A herbicide that kill some plant species with little or no injury to others is called

A susceptible crop planted to attract a pest into a localized area

Refers to a pest ‘s ability to repopulate after its natural control has been eliminated by a pesticide applications is called

A example of an inorganic pesticide is called

A fungicide which is applied prior to disease infection is called

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