The phenomenon when weed seeds fail to germinate even under Favorable conditions

Fungi belonging to Class Oomycetes are commonly called the

The innate property of a chemical to produce harm

When a tomato plant has a root and stem rot disease, which leads To wilting, the wilting symptoms are classified as

The general term used to describe any chemical used to control Pests

The stage of growth when the weed is most affected by weed Control measures

In a life cycle of a typical myxomycete, the myxamoeba are usually Formed during

Which among the following phyla belongs to the kingdom of true Fungi

Nematodes that move from plant to plant and only their stylet Enter the plant cells are called

The walls of fungi generally contain

This refers to an extensive, usually sudden death of host tissue

The causal agent of corn rust is

The four rules of proof that are used in identifying certain plant Diseases

Nota method of isolating plant parasitic soil nematodes

A fungal insect parasite

This refers to an organism which has the ability to be a parasite Although it is ordinarily a saprophyte

The infective stage of cyst nematodes is

Peronosclerospora philippinensis is the causal agent of

The ventral portion of the thorax and abdomen is known as

The overdevelopment of plant cells, tissue or plant parts is called

Called the golden cyst nematode of Irish potato

The slimy, whitish secretion containing bacterial cells

The first organic herbicide belongs to what chemical family of Herbicides?

When was the first organic and selective herbicide developed?

Which of the following does not affect the completion of the life Cycle of nematoodes?

Fungi like Aspergillus flavus and A. parasiticus infecting cereal and Legume seeds produce a carcinogenic toxin which is

The naming of newly discovered fungal species is based commonly On

Gibberella fujikuroi is the causal agent of

The kind of nematodes feeding only on root hairs and root tips

The plant disease first shown to be caused by bacteria

This symptom is also called a lesion.

A disease which is aggravated by the presence of root knot Nematode

Submicroscopic entities which could pass through bacterial-proof Filters are called

Growth of germ tube towards hosts or substrates may be due to Chemicals. This response is called

Sigatoka is a fungal disease of what crop?

Non-parasitic fungi which are present on plant parts with deposit Of insects, particularly aphids and scale insects

The most common infectious agents of plant disease

The causal agent of mango anthracnose is

The following are physical causes of weed seed dormancy except.

This is the study of insects

The rotting of seedlings prior to emergence is termed

He demonstrated that fungi are the cause and not the result of Plant diseases

The mechanism which controls sprouting of yperus rotundus Tubers that are attached to the mother plant

The following are insect vector of plant disease except

Most weed seeds in the soil are found within the

A disease caused by "fastidious" vascular bacteria

Fungi that only reproduce asexually

The author of the milestone of Philippine Entomology is

Phylogenetic classification of fungi is based on

The following are vegetative propagules except

An example of asexual spores is

This is considered to be the most destructive nematode to Worldwide Agriculture

It is the only genus of plant pathogenic bacteria that produces Spores

The inherent property of a herbicide to kill some plants but not Other plants

The pathogen that gained worldwide recognition especially during The 1960s because of its extreme effectiveness in controlling Lepidopterous pests especially diamondback moth.

The only plant pathogen belonging to Kingdom Animalia

A known non-spore forming fungi is

The risk of likelihood of an adverse effect due to exposure to a Harmful chemical

This may not cause disease in plants

The earliest insect found during the Middle Devonian period, Rhyniella praecurso, belong to the insect order

Also known as the "burrowing" nematode and causes the toppling Disease of banana

Eggs of rootknot nematodes are deposited

This is the rice fungal disease that caused Bengal famine in 1943

The following are Gram negative bacteria except

Which of the following is not a mechanism of variation in bacteria?

When nematodes form disease complex with another pathogen, it Usually

The fungal disease which greatly affected the coffee industry of Batangas

The DA Special Order number which embodies the provisions on Integrated Pest Management

He was the first Filipino to obtaina doctoral degree in entomology In 1922

Which is not a mechanism of bacteria pernetration to the host?

The component of a pesticide which is responsible for its toxic Effect

The part of the mouthparts without a palpus

The following are means by which weeds are dispersed from one Area to another, except

Which among the following is not a weed dispersal unit

The first monographic treatment of Philippine mosquitoes by Delfinado in 1966 included all genera except

Described as the struggle between two or more plants for a limited Resource

Quiescent or latent infection is often associated with

ability of some plants to survive a herbicide treatment that Would normally kill other plants

A fungus merely covering the surface of the plant without Necessarily parasitizing it

Nematodes as plant pathogens were first observed by Needham in

Weeds having expanded leaves with netted venation

The first organic herbicide that revolutionized chemical weed Control

The color band of highly toxic pesticides

This is an example of foliar nematode

Which among the following may be colonized by plant Pathogenic Bacteria

The genera of nematodes which causes root

The year when the DA Special Order on Integrated Pest Management was signed

The mouthpart of a nematode that is inserted inside a plant cell Thru which the plant juices are withdrawn and sucked

This is not a source of pathogen inoculum

Which among the following is not a typical nematode disease Symptoms

When the mouthparts are directed anteriad, this is known as

A group of substances secreted by pathogens that interfere with The permeability of protoplast membrane

The nearest relative of the class Insecta is

This refers to the pathogen associated with the infected plant

The kind of nematodes which move within the host tissues and/or Between the soil and the host

He wrote the first textbook in Plant Pathology

The lateral sides of the middle segment of the insect thorax is Known as

A general necrosis caused by the rapid growth and advance of the Causal bacteria through leaves and stems

The expression of a diseased plant with certain characteristics

The asexual stage of fungi is also known as the