Entomology most important questions for competitive exams

Entomology most important questions for competitive exams – Part 1

  1. The pest which attack both in field and storage of pulses is

(a) Pulse beetle

(b) Gram pod borer

(c) Red gram pod fly

(d) Pod borer

  1. Grubs which feed on the inner content of seed in pulses belongs to

(a) Aphis craccivora

(b) Callosobruchus chinesis

(c) Agrotis ipsilon

(d) Aceria cajani

  1. Eriophyid mite (Aceria cajani) belongs to family

(a) Bruchidae

(b) Aphididae

(c) Eriophyidae

(d) Noctuidae

  1. Wilting of groundnut plants in patches with damaged roots is caused by

(a) Holotrichia consanguinea

(b) Spodoptera litura

(c) Spilosoma obliqua

(d) Odontotermes obesus

  1. The mustard saw fly (Athalia proxima)

lays eggs near

(a) Flower

(c) Soil surface

(b) Leaf margin

(d) Roots

  1. Larvae of castor semi looper ( Achoea janata) feed gregariously and defoliate the plants belongs to family

(a) Pyraustidae

(b) Arctiidae

(c) Noctuidae

(d) None

  1. Curling of leaf upwards and yellowing of terminal cotton shoots is characteristic symptom of presence of

(a) Cotton Aphid (Aphis gossypii)

(b) Cotton leaf hopper(Amrasca devastans)

(c) Pink boll worm (Pectinophora gossypiella)

(d) Red cotton bug (Dysdercus cingulatus)

  1. Flared squares (Flare-up) is the d symptoms of damage

(a) Earias vitella

(b) Helicoverpa armigera

(c) Pectinophora gossypiella

(d) None of these

  1. The boll worm which covers the once it enters into the boll is opening

(a) Cotton semi lopper

(b) Pink boll worm

(c) Spotted boll worm

(d) American boll worm

  1. Which bacteria is responsible for staining of the cotton fiber ?

(a) Azotobactor sp

(b) Clostridium botulinum

(c) Nematospora gossypii

(d) Bacillus sp.

  1. American boll worm controlled by release of predator

(a) Chrysoperla carnea

(b) Trichogramma spp

(c) Nematospora gossypii

(d) None

  1. Bunchy top appearance in grown up sugarcane due to formation of side shoots is caused by

(a) Early shoot borer (Chilo infuscatellus)

(b) Top shoot borer (Scirpophaga nivella)

(c) Woolly aphid (Ceratovacuna lanigera)

(d) Pyrilla (Pyrilla perpusilla)

  1. Stripping of sugarcane leaves minimizes the attack of

(a) Mealy bugs

(b) Pyrilla

(c) Early shoot borer

(d) Top shoot borer

  1. Sugarcane leaf hopper (Pyrilla perpusilla) is controlled by release of lepidopteran parasitoid

(a) Epiricania melanoleuca

(b) Granulosis virus

(c) Sturmiosis inferens

(d) Trichogramma chilonis

  1. Skeletanization of tobacco leaves is caused by

(a) Aphid (Myzus persicae)

(b) White fly (Bemisia tabaci)

(c) Tobacco caterpillar (Spodoptera litura)

(d) Tobacco stem gall (Phthorimaea heliopa)

  1. T shaped marking on marble sized mango fruits and at later stages feeding on cotyledons is characteristic symptoms of

(a) Amritodus atkinsoni

(b) Drosicha mangiferae

(c) Sternochetus mangiferae

(d) Oecophylla smaragdina

  1. Lemon butterfly is

(a) Toxoptera citricida

(b) Phyllocnistis citrella

(c) Papilio demoleus

(d) None of these

  1. Bagging of anar fruits with polythene cover is done to avoid damage from

(a) Butterfly sucking moth

(b) Fruit borer

(c) Shoot hole borer

(d) Fruit fly

  1. The infested region on bark turns into pink colour and pink colour encrustation on apple fruits are the characteristic damage symptoms of

(a) Apple wooly aphid (Eriosoma lanigera)

(b) San Jose Scale (Quadraspidiotus perniciosus)

(c) Apple stem borer (Apriona cinerea)

(d) Leaf webber (Nephoteryx engraphella)

  1. Which pest of potato attacks the tuber both in field and storage?

(a) Potato aphid

(b) Lady bird beetle

(c) Potato tuber moth

(d) Potato black cut worm

  1. Egg larval parasitoid Chelonus blackburni is used to check the population of

(a) Agrotis ipsilon

(b) Phthorimaea operculella

(c) Myzus persicae

(d) None of these

  1. Minning and skeletanization of cabbage leaves are the characteristic damage symptoms of

(a) Diamond back moth (Plutella xylostella)

(b) Cabbage borer (Hellula undalis)

(c) Painted bug (Bagrada cruciferarum)

(d) None of these

  1. Bt cabbage is developed against

(a) Diamond Back Moth

(b) Cabbage butterflies

(c) Aphid

(d) Painted bug

  1. Gummosis and Crown toppling in coconut are due to

(a) Rhinoceros beetle

(b) Red palm weevil

(c) Black headed caterpillar

(d) Coconut mite

  1. Which one of the following pest is an introduced pest of coffee?

(a) Green bug

(b) Berry borer

(c) Stem borer

(d) Mealy bug

  1. Which of the following pairs is no correctly matched Insect Damaging

(a) Potato tuber moth Grubs stage

(b) Rice weevil Grubs and adults

(c) Pulse beetles Grubs

(d) Lesser grain borer Grubs and adults

  1. Which of the following is a secondary pest of storage?

(a) Long headed flour beetle

(b) Flat grain beetle

(c) Saw toothed grain beetle

(d) All of these

  1. In storage, grains can be mix with

(a) Chlorpyriphos

(b) Dichlorvos

(c) Malathion WP

(d) Deltamethrin

  1. is an important major pest species in the complex of pests attacking a crop.

(a) Sporadic pests

(b) Regular pest

(c) Key pest

(d) Endemic pest

  1. Flooding of the fields will help in control of

(a) White grubs

(b) Termites

(c) Cut worms

(d) All of these

  1. Destructive Insects Pest Act (DIPA) was
    passed on

(a) 1914

(b) 1920

(c) 1937

(d) 1968

  1. Directorate of Plant Protection Quarantine and Storage (DPPQS) was established in 1946 with head quarters at

(a) Ghaziabad

(b) Faisabad

(c) Faridabad

(d) Faislabad

  1. Sterile insect technique was first time proposed in the year 1937 by

(a) Knipling

(b) H.S. Pruthi

(c) Lefroy

(d) Frisch

  1. Biocontrol agent for lantana weed (Lantana camera) is

(a) Ophiomyia lantanae

(b) Neochetina eichorniae

(c) Crytobagus singularis

(d) Zygogramma bicolorata

  1. Bacillus thuringiensis was discovered by :

(a) S. Ishiwata

(b) Berliner

(c) Flacher

(d) Frisch

  1. Which insect has evolved resistance to Bt in open field population?

(a) Pink boll worm

(b) Diamond back moth

(c) Spotted boll worm

(d) None of these

  1. Commercially granulosis virus (GV) used for the control of

(a) Helicoverpa armigera

(b) Spodoptera litura

(c) Chilo infuscatellus

(d) None of these

  1. Metarrhizium anisopiliae targeted against sugarcane pyrilla and rhinoceros beetle and commercially available under the trade name of

(a) Boverin

(b) Mycar

(c) Biomax

(d) Vertilec

  1. Which of the following repellent is used against termites?

(a) Oil of citronella

(b) Deet

(c) Pentachlorophenol

(d) Bordeaux mixture

  1. What are substance, which make the plant distasteful to the insects feeding on it

(a) Attractant

(b) Repellent

(c) Chemosterilants

(d) Antifeedant

  1. acts as the precursor for ecdysone synthesis

(a) Arachidic acid

(b) Cholesterol

(c) Methionine

(d) Ergosterol

  1. Juvenile hormone (JH) is a terpene secreted by

(a) Corpora cardiaca

(b) Corpora allata

(c) Culticle

(d) Accessory glands

  1. The term “third generation pesticides” is given for

(a) Juvenile hormone

(b) Moulting hormone

(c) Brain hormone

(d) Anti juvenile hormone

  1. Which of the following statement is incorrect?

(a) Kairomone is beneficial to receiver

(b) Synomone is beneficial to receiver & emitter

(c) Antimones are non advantageous to both receiver and releaser

(d) None of these

  1. A substance released by a non living material which is favourable to a receiving organism but detrimental to an organism of another species that is found in or on the non living material is known as

(a) Aneumone

(b) Synomone

(c) Pheromone

(d) Kairomone

  1. The non-preference plant resistance to insects is also known as

(a) Antibiosis

(b) Antixenosis

(c) Tolerance

(d) None

  1. Father of host plant resistance is

(a) Kogan & Ortman

(b) R.H. Painter

(c) Zeidler

(d) Paul Muller

  1. Gronim and Achook are commercial insecticides of in market. available

(a) Neem

(b) Rotenone

(c) Sabadilla

(d) Pyrethrum

  1. Rotenone is a broad spectrum contact nerve and stomach poison and affect and muscle cells in insects, derived

(a) Seed

(b) Flower
(c) Leaves

(d) Roots

  1. Nicotine cause failure of nervous system and commercially available as

(a) Nicotine sulphate

(b) Nicotine phosphate

(c) Nicotine

(d) Acetylcholine

  1. from of congress grass (Active principle is parthenin) have the pesticial properties

(a) Seed

(b) Leaf extracts

(c) Flower

(d) Roots

  1. Fumigant insecticides includes

(a) Methyl bromide

(b) Ethylene dichloride

(c) Chloropicrin

(d) All of these

  1. Extremely toxic class of pesticides have colour of lower triangle

(a) Bright red

(b) Bright yellow

(c) Bright blue

(d) Bright green

  1. Central Insecticides Laboratory (CIL) is located at :

(a) Gurgaon

(b) Faridabad

(c) Ghaziabad

(d) Kanpur

  1. Total no. of pesticides restricted for use in India is:

(a) 186

(b) 24

(c) 7

(d) 3

  1. Which energy is utilized for making fog, smoke and vapor sprays?

(a) Hydraulic

(b) Gaseous

(c) Certrifugal/electrical

(d) Thermal

  1. Which of the following pairs is not correctly matched ? Spray Volume median diameter (um or u)

(a) Mist spray 51-100

(b) Aerosol/fog 1-50

(c) Smoke 0.01-1

(d) Vapor > 400

  1. Which of the following statement is correct?

(a) Flat fan spray nozzles are widely used for broadcast spraying of herbicides and insecticides

(b) Flooding fan nozzle” turbo floodjet” is designed for use with soil incorporated herbicides and liquid fertilizers.

(c) Cone nozzles is a low drift nozzle and is used to apply soil incorporated herbicides

(d) All of these

  1. In world, first field release of Bt cotton was in :

(a) 1990

(b) 1994

(c) 1996

(d) 2000

  1. In India the Bt cotton was released for commercial cultivation in year:

(a) 2000

(b) 2002

(c) 2004

(d) None of these

  1. Transgenic crop which have highest area in world is:

(a) Soybean

(b) Maize

(c) Cotton

(d) Mustard

  1. Barnase, barstar and bar genes are used for developing genetically modified:

(a) Cotton

(b) Mustard

(d) Potato

(c) Maize

  1. The area under Bt cotton in India is about:

(a) 50,000 ha

(b) 60,00,000 ha

(c) 1,50,000 ha

(d) 2,00,000 ha

  1. In India Genetic Engineering Approval Committee (GEAC) is responsible for monitoring of GM crops come under ministry of:

(a) Agriculture

(b) Environment and forest

(c) Information and broadcasting

(d) Rural development

  1. Work on GM mustard is carried out by:

(a) Monsanto

(b) Syngenta

(c) Mahyco

(d) Proagro

  1. Indian mole rat is zoologically known as :

(a) Rattus rattus

(b) Mus musculus

(c) Bandicota bengalensis

(d) Bandicota indica

  1. Leishmaniasis or kalla azar disease caused by Protozoan (Leishmania donovani) and spread by:

(a) Black files

(b) Sand flies

(c) Horse flies

(d) Tsetse flies

  1. Insect vector of African sleeping sickness (caused by Trypanosoma gambiense) is:

(a) House flies

(b) Sand flies

(c) Human lice

(d) Tsetse flies

  1. The causative agent of malaria fever in man is :

(a) Pasterulla pestis

(b) Ricketsia mooseri

(c) Bacillus sp.

(d) Plasmodium sp.

  1. Dengue disease (caused by virus) is transmitted by:

(a) Culex sp.

(b) Aedes aegypti

(c) Anopheles sp.

(d) Phlebotomus spp

  1. Nodus wing is present in the order:

(a) Protura

(b) Coleoptera

(c) Diptera

(d) Odonata

  1. Chitin inhibitor compound is :

(a) Dipel

(b) Dimilin

(c) Mimic

(d) Romdan

  1. The process of killing pupa without changing the cocoon shell layer is known as:

(a) Stiffling

(b) Denier

(c) Dupion

(d) Hatching

  1. The state which rank first in raw silk production is:

(a) A.P.

(b) W.B.

(c) Bihar

(d) Karnataka

  1. The stage of silk worm when it synthesizes silk is:

(a) IV th instar larvae

(b) Vth instar larvae

(c) Pre pupal stage

(d) Both (a) and (b)

  1. The number of generations an insect completes in one year in its natural condition is known as:

(a) Voltinism

(c) Grainage

(b) Denier

(d) None

  1. Scientific name of the Dammer bee is:

(a) Apis dorsata

(b) Melipona irridipennis

(c) Apis mellifera

(d) Apis indica

  1. Nosema disease of bee is caused by:

(a) Protozoa

(b) Virus

(c) Mite

(d) Asperigillus flavus

  1. The process of leaving off the colony by queen is known as :

(a) Absconding

(b) Swarming

(c) Supersedure

(d) Queen excluder

  1. The first abdominal segment when fused with metathorax in bees is known as:

(a) Propodeum

(b) Mandibles

(c) Basitarsus

(d) Mesopodeum

  1. Major pests of honey bee is/are

(a) Bee eater- Vespa cincta

(b) Bee hunter wasp – Palerus orientalis

(c) Greater wax moth – Galleria melonella

(d) All of these

  1. Safest chemical for honey bee is :

(a) Malathion

(b) Methyl parathion

(c) Endosulfan

(d) None of these

  1. Bee venom is used for and released from acid glands

(a) Curing pains at joints

(b) Repellent against greater wax moth

(c) Pollinization

(d) None of these

  1. In honey bees, the queen substance secreted by

(a) Mandibular glands

(b) Acid glands

(c) Pharyngeal glands

(d) Wax glands

  1. Type of mouth parts present in honey bee is

(a) Rapsing and sucking

(b) Chewing & lapping type

(c) Chewing and biting

(d) None of these

  1. Which scientist studied the method of communication in honey bees?

(a) Karl Von Frisch

(b) H.M. Lefroy

(c) H.S. Pruthi

(d) Ronald Ross

  1. Scientifically lac insect is known as

(a) Laccifera lacca

(b) Apis dorsata

(c) Artocarpus heterophyllus

(d) Zizyphus spp

  1. The glands that help in secretion of lac is

(a) Fillip gland

(b) Ishiwata’s gland

(c) Resin gland

(d) Lyonetts gland

  1. Rangeeni strain is related to

(a) Bee

(b) Silk worm

(c) Lac insect

(d) None

  1. The light producing substance in Glow worm/fire fly is

(a) Luciferin

(c) Pyrethrin

(b) Allethrin

(d) BOAA

  1. The egg colour of Earias sp. is

(a) Sky blue

(b) Yellow

(c) White

(d) Creamy

  1. The pebrine disease of silk worm is
    caused by

(a) Bacteria

(b) Fungi

(c) Virus

(d) Protozoa

  1. Emmelocera depresella attack roots only of

(a) Cotton

(b) Sugarcane

(c) Tobacco

(d) Mustard

  1. Pterostigma is a character of the order

(a) Protura

(b) Coleoptera

(c) Odonata

(d) None

  1. Cervix is located between

(a) Head and prothorax

(b) Head and mesothorax

(c) Antennae and prothorax

(d) None of these

  1. Highly evolved insect order is

(a) Hymenoptera

(b) Coleoptera

(c) Hemiptera

(d) Diptera

  1. Degenerated ocelli of cockroach is called as

(a) Glossa

(b) Fenestra

(c) Acrotergite

(d) None of these

  1. Number of chambers in heart of cockroach is

(a) 10

(b) 11

(c) 12

(d) 13

  1. Most serious pest of wheat is

(a) Termite

(b) Thrips

(d) Leaf hoppers

(c) Cut worms

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