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

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 extra schromosomal 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

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

This herbicide will not move or translocate within the plant , they often used for controlling annual weeds