Entomology most important questions for competitive exams

Entomology most important questions for competitive exams – Part 1

1.Earias vitella is the pest of:

(a) Brinjal

(b) Citrus

(c) Cotton

(d) Sunflower

  1. White grub beetles lay eggs :

(a) On the underside of the leaf

(b) Singly in loose soil up to the depth of 10 cm

(c) On the plant stem at the level of ground

(d) Within the floral parts

  1. Which one is army worm (attack at milking stage) ?

(a) Chilo partellus

(b) Pericallia ricini

(c) Plutella xylostella

(d) Mythimna separata

  1. Yellow mosaic virus disease of moong spreads by:

(a) Bemisia tabaci

(b) Aphis craccivora

(c) Nephotettix viruscens

(d) Amrasca bigulitula

  1. Virachola isocrates is the fruit pest of:

(a) Mango

(b) Citrus

(c) Apple

(d) Pomegranate

  1. Callosobruchus chinensis is storage pest of :

(a) Wheat

(b) Gram

(c) Rice

(d) Groundnut

  1. Dasineura lini is the pest of

(a) Castor

(b) Sesamum

(c) Linseed

(d) Groundnut

  1. Nozzle is a part of:

(a) Rotary duster

(b) Cynogas pump

(c) Hand Compressor sprayer

(d) None of these

  1. Which of the following insecticide may be recommended for the control of termite ?

(a) Dimethoate

(b) Nimbicidine

(c) Methyl-O-Demetone

(d) Chlorpyriphos

  1. The econfriendly insecticide is :

(a) Malathion

(b) Thiodan

(c) Nimbicidine

(d) Permethrin

11.Pink boll worm is a serious pest of:

(a) Mustard

(b) Cotton

(c) Gram

(d) Ladies finger

  1. Pheromone trap attracts :

(a) Female bugs

(b) Caterpillars

(c) Female Moths

(d) Male Moths

  1. Which of the following is not a bio pesticide?

(a) Bioneem

(b) Biolep

(c) Dipel

(d) Carbaryl

  1. Which one of the following is a carbamate pesticide?

(a) Aldicarb

(b) Heptachlor

(c) Malathion

(d) Endosulfan

15.Dimethoate is :

(a) Contact insecticide

(b) Systemic insecticide

(c) Fumigant

(d) Stomach poison

  1. Erisilkworm is reared on

(a) Mulbery

(b) Castor

(c) Coconut

(d) Banana

  1. The worker bee is

(a) Drone

(b) Sterile male

(c) Sterile female

(d) None of these

  1. Following is one of the floral host plant recommended for apiary

(a) Rangoon Creeper

(b) Rose

(c) Jasmine

(d) Chrysanthenum

  1. One of the major insect enemy of honey bee is

(a) Vesa cincta

(b) Galleria mellonella

(c) Acherontia styx

(d) Formicaria rufa

  1. Trichogramma parasitoid release is recommended for the management of

(a) Gangora thyrsis

(b) Atherigona soccata

(c) Chilo infuscatellus

(d) Holotrichia serrata

  1. The major predator of lac insect is

(a) Mantis religiosa

(b) Eublemma amabilis

(c) Coccinella septumpanata

(d) Chrysoperla carnea

  1. Which of the following laboratory host is used for the multiplication of egg parasitoids?

(a) Spodoptera litura

(b) Chilo partellus

(c) Corcyra cephalonica

(d) Helicoverpa armigera

  1. Following is an example of Bt transgenic cotton

(a) Jayadhar

(b) Varalaxmi

(c)NH – 44

(d) Bollguard

  1. An insecticide which is used as seed tre atment for sucking pest management is

(a) Diazinon

(b) Imidacloprid

(c) Endrin

(d) Fenvalerate

  1. Following is the insecticide which is having fumigant and penetrant action

(a) Lindane

(b) DDVP

(c) Chlorpyriphos

(d) Endosulfan

  1. The following is the effective pathogen on Helicoverpa armigera 26.

(a) Rickettsiae

(b) Bacillus popillae

(c) Nuclear polyhedral virus

(d) Metarrhizium anisopliae.

  1. Use of light traps for the management of pest is an example of

(a) Culture control

(b) Mechanical method of control

(c) Legal method of control

(d) Biological control

  1. The most widely used bacterium in insect control is

(a) Fusarium sp.

(b) Bacillus popillae

(c) Bacillus cereus

(d) Bacillus thuringiensis

  1. Use of resistant varieties in the IPM of insect is an example of

(a) Legal control

(b) Cultural control

(c) Chemical control

(d) Biological control

  1. Which one of the following is the example of insect hormone ?

(a) Lindane

(b) Ecdysone

(c) Chitin

(d) Allethrin

  1. Certain secretions attract the opposite sex of the same species which are termed as :

(a) Hormones

(b) Kairomones

(c) Synomones

(d) Pheromones

  1. The dwelling place of termites is also known as

(a) Canal

(b) Tunnel

(c) Mound

(d) Cave

  1. The highest pesticide used crop in India is

(a) Rice

(b) Sugarcane

(c) Maize

(d) Cotton

  1. The insecticide which is being opposed by environmentalist is

(a) DDVP

(b) Chlorpyriphos

(c) Sulphur

(d) Endosulfan

  1. Following insecticide is safely recommended on vegetables

(a) Carbaryl

(b) Aldicarb

(c) Endrin

(d) Malathion

  1. Stem injection or root feeding of Monocrotophos is recommended for the
    management of

(a) Cotton bollworm

(b) Tea mosquito

(c) Coffee stem borer

(d) Coconut black headed caterpillar

  1. Following fungus is effective on root grubs

(a) Fusarium sp.

(b) Beauveria sp.

(c) Nomuraea rileyi

(d) Metarrhizium anisopliae

38.vPrickly pear weed has been effectively controlled by

(a) Zygogramma bicolorata

(b) Neochetina eichevniae

(c) Dactylopious tomentosus

(d) None of these

  1. Following is the acaricide widely recommended for mite management

(a) Kelthane

(b) Rogor

(c) DDVP

(d) Monocrotophos

  1. Following is the pesticide which is of plant origin

(a) Spinoside

(b) Bulldoc

(c) NSKE

(d) Allethrin

  1. Following granular insecticide is having long residual effect

(a) Phorate

(b) Carbofuran

(c) Aldicarb

(d) Quinalphos

  1. Following insecticide belongs tovorganophosphate group

(a) Sulphur

(b) Carbofuran

(c) Malathion

(d) Endosulfan

  1. The insecticide which is used invmosquito mats is

(a) Endosulfan

(b) Diazinon

(c) Malathion

(d) Allethrin

  1. Following anticoagulant is used for rat control

(a) Zinc- phosphide

(b) Alâ‚‚ Po4

(c) Hydrogen Cyanide

(d) Warfarin

  1. Aphids and white flies are effectively controlled by

(a) Fumigants

(b) Stomach poisons

(c) Contact insecticides

(d) Systemic insecticide

  1. Following is an example of high volume sprayer

(a) ULV applicator

(b) Foot sprayer

(c) Hand sprayer

(d) Battery operated sprayer

  1. The higher LD 50 value indicates thevfollowing

(a) Neutral

(b) Less toxic

(c) Highly toxic

(d) None of these

  1. Following is used as a sticker along withvinsecticide for better spread

(a) Dettol

(b) Coaltar

(c) Phenol

(d) Teepol

  1. Following insecticide has anti cholinesterase action on insect nervousvsystem

(a) Malathion

(b) Sulphur

(c) Lindane

(d) Endrin

  1. Celphos tablets are used for the
    management of

(a) Coconut mites

(b) Cotton boll worm

(c) Rice stem borer

(d) Storage pests

51.IPM relies heavily on

(a) Economic threshold level

(b) Total loss of crops

(c) Resistant pest

(d) Susceptible pest

  1. Project Directorate of Biological Control is located at

(a) Bangalore

(b) New Delhi

(c) Faridabad

(d) Jaipur

  1. Red cotton bug lay its egg on/in

(a) Bolls

(b) Leaf

(c) Soil

(d) Flower

  1. Sorghum shoot fly lays egg on

(a) Lower surface of leaf blades

(b) Upper surface of leaves

(c) Flowers

(d) Roots

  1. Indicate which one is the ear head midge

(a) Contarinia sorghicola

(b) Calocoris anguistata

(c) Orseolia oryzea

(d) Chilo partellus

56.The spotted boll worm is

(a) Earias vittella

(b) Earias insulana

(c) Helicoverpa armigera

(d) Pectinophora gossypiella

  1. The vector of rice tungro disease is

(a) Nephotettix virescens

(b) Aphis craccivora

(c) Bemisia tabaci

(d) Toxoptera aurantii

  1. Which of the following crop has the outbreak of wooly aphid been noticed recently?

(a) Maize

(b) Barley

(c) Sugarcane

(d) Cotton

  1. Sugarcane is recently infested by following wooly aphid –

(a) Ceratovacuno lanigera

(b) Eriosoma lanigera

(c) Aphis gossypii

(d) Lipaphis spp.

  1. Cosmopolites sordidus the banana rhizomes weevil belong to

(a) Pyralidae

(b) Cucurlionidae

(c) Thripidae

(d) Aphidae

  1. Scientific name of sorghum aphid is

(a) Melanaphis sacchari

(b) Hysteraneura setariae

(c) Both (a) & (b)

(d) Brevennia rehi

  1. The following is the most notoriousvpolyphagous pest

(a) Chilo incertulas

(b) Mythimna separata

(c) Helicoverpa armigera

(d) Gangara thyrsis

  1. The holes at the base of sorghum peduncle are due to

(a) Chilo partellus

(b) Atherigona soccata

(c) Contarinia sorghicola

(d) Calocoris angustata

  1. The ladder shaped scrapping on the rice leaves is due to

(a) Dicladispa armigera

(b) Cnapholocris medinalis

(c) Nympula deptinctalis

(d) None of these

  1. The integument comprises of

(a) Cuticle, epidermis & basement

(b) Cuticle membrane + basement

(c) Epidermis + basement

(d) Cuticle + epidermis

  1. Mellipedes fall under the following class of Arthropoda

(a) Insecta

(b) Myriapoda

(c) Crustacea

(d) Arachnida

  1. Anamorphosis is encountered the following insect order

(a) Protura

(b) Dictyoptera

(c) Ephemereptera

(d) Coleoptera

  1. Example of an insect order in which nymphs are called naids

(a) Thysanura

(b) Odonata

(c) Diptera

(d) Hymenoptera

  1. The first longitudinal wing vein is

(a) Anal vein

(b) Median vein

(c) Costal vein

(d) Redial vein

  1. following insect The pronotum is ideally seen in the

(a) Moth

(b) Ants

(c) Termite

(d) Cockroach

71.Stylets are present in the mouth parts of following

(a) Plant bug

(b) Cockroach

(c) Cotton weevil

(d) Rhinoceros beetle

  1. Sting in worker honey bee is a modified part of

(a) Antenna

(b) Ovipositer

(c) Styli

(d) Cerci

  1. Supra oesophagial ganglion is also called

(a) Brain

(b) Abdominal ganglia

(c) Thoracic ganglia

(d) None of these

  1. Corpora codiaca secretes the following in insect

(a) Hormone

(b) Pheremone

(c) Apheremone

(d) Synomone

  1. Following is an example for secondarily wingless insect

(a) Blister beetle

(b) Head louse

(c) Collembolan

(d) Silver fish

  1. Hindgut of insect is also known

(a) Stomodaeum

(b) Proctodaeum

(c) Gizzard

(d) Mesenteron

  1. Example of an exopterygote insect order with a pupal instar in its life cycle

(a) Thysanoptera

(b) Heteroptera

(c) Odonata

(d) Cepidoptera

  1. The spidericks and mites belong to the Arthropod class 78.

(a) Pauropoda

(b) Unimeria

(c) Arachnida

(d) Diptopoda

  1. Example of a primarily wingless insect in which wing buds never develops

(a) Mallophga

(b) Protura

(c) Coccids

(d) Caterpillar

  1. The cockroach belonging to order Dictyoptera as typical of an Orthoptera insect has

(a) Large anal lobe in hind wing

(b) Elytra

(c) Large anal lobe in forwing

(d) Few malpighian

  1. The probosis in the mouth parts of the butterfly is formed from

(a) Labium

(b) Galea of maxillae

(c) Maxillary palp

(d) Galea of mandible

  1. The last segment in the abdomen of male cockroach in addition of cerci will have a pair of

(a) Caudal filament

(b) Anal styli

(c) Clasper

(d) Paraprocts

  1. Accessory gland of mesodermal origin in the male reproductive system of cockroach are

(a) Milk gland

(b) Mesadenia

(c) Colleperial gland

(d) Vesicula seminalis

  1. Earthworm has a circulatory system which is extensive and

(a) Haemocoelic

(b) Open type

(c) Closed type

(d) Expended by typhlosole

  1. Insect are the most abundant diversified of all animal due to their and

(a) Segmented body

(b) Antenae

(c) 3 pairs of legs

(d) Capacity of flight

  1. The noctuid which is common pest to both pigeonpea and chickpea is

(a) Spodoptera litura

(b) Adisura atkinsoni

(c) Helicoverpa armigera

(d) Sesamia inference

  1. Halfmoon shaped scarping or notching of the brinjal leaves are due to

(a) Urentius sp

(b) Epilachna vigintioctopunctata

(c) Leucinodes orbonalis

(d) Myllocerus subfasciantus

  1. The spiralling white fly infesting the leaves of many crops is

(a) Bemesia tabaci

(b) Aleurolobus sp.

(c) Aleurodicus dispersus

(d) None of these

  1. The noctuid borer on ragi is

(a) Sesamia inferens

(b) Chilo partellus

(c) Chilo suppresalis

(d) Scirpophaga nivella

  1. The bushy appearance with dead heart in sugarcane at 6th inter-node is due to

(a) Excess irrigation

(b) Top borer

(c) Excess nitrogen

(d) Mealy bug

  1. Scientific name of banana aphid is

(a) Thrips florum

(b) Pentalonia nigronervosa

(c) Cosmopolites sordidus

(d) Virachola isocrates

  1. White parallel streaks along leaf axis in rice is a characteristic symptoms of

(a) Sciropophaga incertulas

(b) Dicladispa armigera

(c) Nephotettix nigropictus

(d) None

  1. In rice, which insect causes yellowing and drying of plant leading to condition known as “hopper burn”

(a) Brown plant hopper (Nilaparvata lugens)

(b) White backed plant hopper (Sogatella furcifera)

(c) Gundhi bug (Leptocorisa acuta)

(d) Both (a) & (b)

  1. Nibbling of rice earhead and defoliation leaving midrib in rice is caused by

(a) Hieroglyphus banian (rice grass hopper)

(b) Agrotis ipsilon (Cut worm)

(c) Lyphgma pygmoea (rice blue beettle)

(d) None

  1. In paddy, the elongation of leaf sheath, when infested by gall fly (Orseolla oryzae) is due to a chemical known as

(a) Allethrin

(b) Ecdysone

(c) Cecidogen

(d) Allomone

  1. Jowar stem borer causes dead heart in early stage of crop, redning of sorghum midribs and holes on the whorl of newly opened leaves belongs to family

(a) Muscidae

(b) Noctuidae

(c). Delphacidae

(d) Crambidae

  1. In rice, clipping of tip seedlings before transplanting is done to eliminate egg masses of

(a) Yellow stem borer

(b) Brown plant hopper

(c) Rice grass hopper

(d) Cut worm

  1. Dead heart in the wheat central shoot is a characteristic symptoms of

(a) Termites (Odonototermes obesi)

(b) Stem borer (Sesamia inferens)

(c) Green plant bug (Nezara virudala)

(d) All of the above

  1. Which insect feeds on silk and developing cobs of maize ?

(a) Chilo zonellus

(b) Helicoverpa armigera

(c) Mythmina separata

(d) Calocoris angustatus

  1. In gram, circular bore holes on pods plugged by the head of a larva is related with

(a) Gram pod borer

(b) Red gram pod fly

(c) Gram cut worm

(d) Blister beetle

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