CropProt 01

通報

問題一覧

The following are component of a disease triangle, except:

avirulent pathogen

The casual organism of root knot of most vegetables?

M. Incognita

From which character was the name Arthropoda derived?

jointed legs

Which of the ff. species is a member of Poaceae

pulang-pwet

Where did Golden Apple Snails originated?

South America

It is an species of rodents that is not a good swimmer, but is able to climb trees for food

rattus exulans

Which of the types of insect development is referred to as gradual metamorphosis.

paurometabolous

Not eukaryotic pathogen

fastidious vascular bacteria

The type of metamorphosis for exopterygotes is

paurometabola

Which of the following plant disease and their symptoms that do NOT match

Plague- caused by black rats that cause death of 25,000,000 people or one-third of the population of Europe during the fourteenth, 14th, Century

The most attractive insect order because of its beautiful colorations

Lepidoptera

Which among these is not an abiotic or parasitic plant disease

fungi, bacteria, viruses and others

Nematodes are isolated by the so-called:

baermann funnel method

Viruses are infectious particles that attack many forms of life including bacteria and plants. How can one see viruses?

use of electron microscope

Only the following is not a virus disease of rice:

rice blast

In order to minimize pests infestations and garbage odor the National Solid Waste Management Law, RA 9003 mandates that all biodegradable garbage and all cellulosic waste like grasses, etc. be recycled into green charcoal. Which of the following statement is NOT correct

the color of green charcoal is green

A principle of plant disease control that is intended to eliminate, inhibit or kill pathogens that become established within the plant in the are is:

eradication

All of the ff are measures to reduce or prevent the development of pathogens on plant surfaces EXCEPT

over application of nitrogen

What is the process whereby seeds are treated with fungicide before planting to protect them from soil-borne diseases and insect pests?

seed treatment

One example of an acute rodenticide:

zinc phosphide

What is the symptom and cause of etiolation?

yellowing of leaves due to inadequate light

All of these weeds belong to the grass family, except:

takip kuhol

Which among these is a broadleaf weed

morning glory

Apterygote insects are known to possess this characteristics

wingless

Which one of these rice diseases is vectored or transmitted by green leafhopper?

tungro

The best method of improving effectiveness of beneficial insects is by

augmentation and conservation

Which one of these rice diseases is vectored or transmitted by green leafhopper?

tungro

The green leafhoppers (GLH) cause this type of direct damage?

hopper burn

When an insect undergoes the 4 stages of development. What is its type of metamorphosis?

Holometabolous

Which one of these insecticides is classified as cholinesterase enzyme inhibitor?

organophosphorus

Which one of these insecticides affects the Na+ and K+ ions of the nerves?

organochlorine

Which group of insecticides is known as first generation chemicals?

arsenicals

Alate insects are?

winged

A structure which can be found in the thorax

coxa

These group of insecticides are more effective against sucking insects

systemic poisons

These group of insecticides are more effective against chewing insects

stomach poisons

This method of pest control is also reffered to as legal control

quarantine

This control method combines two or more compatible "control" methods in a sound ecological manner

integrated pest management

The principle in IPM is to

reduce pest population at manageable levels

Insect used during modern weddings

butterfly

Strong pair of mandibles are highly developed in what insects

cockroach

The Asiatic corn borers, Ostrinia furnacalis, is most abundant in corn during the

wet season

The damage caused by corn seedlings maggots, Atherigona oryzae, at seedling stage is called

dead heart

The corn earworms, Helicoverpa armigera, is also called as

cotton budworm

In crucifers, the leaf damage cause by this insect pest is lace-like in appearance

diamond back moth

Scientific name of yellow squash beetles in cucurbits

Aulacophora indica

A type of mouthpart that is present in an adult Lepidopteran?

siphoning

The type of insect development of the order Thysanura

Ametabola

Among inverterbrates, only insects have this characteristics

3 pairs of jointed legs

Where is the cerci located in insects

abdomen

A blight pathogen will affect the plant's capacity to

photosynthesize

A diseased plant is considered a

suscept

Aflatoxin is formed by

Aspergillus flavus

For annual crops, the maximum number of nematodes parasites can be recovered during:

near harvest stage

Fungal pathogens are often isolated using this technique

Tissue planting

In the absence of the plants in the field, fungal pathogens will not survive in

soil

Rye may induce this kind of affliction

St. Anthony's Fire

Some fungal pathogens form this structure to obtain nutrients from the host

haustorium

The Autogenic Theory of Disease states that:

Pathogens are outgrowths of the disease and not the cause

The casual organism of root knot of most vegetables

Meloidogyne incognita

The infective stage of root knot nematode is during

second stage juveniles

The pest population density in which the cost of control is equal or much higher than the expected cost of the protected crop

Economic injury level

This does not characterize a root-feeding nematode

causes death of plants as a typical symptom

Which among the ff is not a type of root feeding nematodes?

necrotrophic parasite

Which is not included in Koch's postulate?

colonization

A characteristics of fungi

eukaryotic

A fungal mycelium appearing on rotten fruit is an example of

sign

A fungal structure used for attachment to the host surface

appressorium

A kind of damage caused by the feeding of an insect through the removal of plant sap or plant parts in contrast with the damage caused by disease-transmitting insects

direct damage

A seed with a virus is an important source of infection since the seed introduces

the virus into the crop at a very early stage

A yellowing cause by come factor other than light, such as by a virus or mycoplasma

chlorosis

Flagellation pattern characterized by the presence of a single flagellum

monotrichous

Fungi in the Philippines reproduce mainly by forming

asexual spores

Some nematodes serves as ____ and transmit plant viruses which contributes in disease developement

vectors

The term for eggs hatching within the uterus followed by expulsion of living young

ovoviviparous

This is the outer non-cellular layer covering the nematode body and is shed-off during molting

cuticle

This part is missing in mollicutes

cell wall

Which among the ff does not belong to the five genera of phytopathogenic bacteria

bacterium

The most damaging insect pests of crucifers, the larvae of which pentrates the epidermis and feed on leaf tissues

Plutella xylostella

In case a disease is not known to you previously, it is necessary to resort to ____.

Koch's postulate

In Davao, this pesticide which is chemically known as Dibromochloropropane (DCBP) was used in 1970 extensively on banana plantations. However, at the end od 1980, high cases of sterility and other health concerns were recorded in ths area. The said pesticide was used to kill what certain plant pathogenic agent?

Nematodes

Which of the following disease is caused by viroid?

potato spindle tuber

Which of the ff statement is true?

Nephotettix virescens can transmit RTSV alone

Which of the following is incorrect?

Belonolaimus sp. - lance nematode

What is the government agenct that regulates movement of "would be pest"?

BPI

An example of asexual spores is

conidia

Preying mantis use this type of forelegs to catch the prey

grasping

Substances such as sex pheromones that lure insects and can be used as a means of control

attractants

The growth stage/s that of the rice plant that is/are most preffered by rice bug

both b and c

A liquid pesticide formulation that does not dissolve in water but is dissolved in organic solvents

emulsifiable concentrates

Rats breed rapidly during

wet season

Population dynamics of rodents is more stable in

urban areas

The main mechanism by which rats can quickly repopulate croplands following population reduction

immigration

This type of antenna is found among scarabaeid beetles

lamellate

The following factors affecting the population dynamics of rodents except

fummigation

The ff are example of chronic rodenticide except

zinc phosphide

The vector of bubonic plague bacteria

flea

A known non-spore forming fungi is

rhizoctonia

Which of the ff is not a mechanical weapon used by plant pathogens to penetrate plant tissues?

toxins

100

Erionata thrax is also known as

banana leaf folder

CropSc 01

CropSc 01

CropSc 02

CropSc 02

Cropsci 03

Cropsci 03

AgEcon 01

AgEcon 01

SoilSc01

SoilSc01

AgEcon 02

AgEcon 02

AgEcon 03

AgEcon 03

AnSci 01

AnSci 01

AnSci 02

AnSci 02

AgExt 01

AgExt 01

AnSci 03

AnSci 03

CropSci 04 UPSTEP

CropSci 04 UPSTEP

CropSci 05 UPSTEP

CropSci 05 UPSTEP

CropSci 06 UPSTEP

CropSci 06 UPSTEP

AgEcon 04 UpStep

AgEcon 04 UpStep

SoilSci 02

Anne Ranay · 53問 · 1年前

SoilSci 02

53問 • 1年前

Ansci 04

Ansci 04

Ansci 05

Anne Ranay · 28問 · 1年前

Ansci 05

28問 • 1年前

zenguru + upstep

Anne Ranay · 25問 · 1年前

zenguru + upstep

25問 • 1年前

Plant Path

Anne Ranay · 43問 · 1年前

Plant Path

43問 • 1年前

weedscience

Anne Ranay · 76問 · 1年前

weedscience

76問 • 1年前

Anne Ranay · 18問 · 1年前

18問 • 1年前

AgExt 02

Anne Ranay · 64問 · 1年前

AgExt 02

64問 • 1年前

AgEcon Upstep & sbrtc 05

Anne Ranay · 37問 · 1年前

AgEcon Upstep & sbrtc 05

37問 • 1年前