Q.1 _________ type of surfactant having both positive and negative charges.
Anionic Non-anionic Zwitterionic
Q.2 Methyl bromide acts as a soil __________ __in tobacco nursery.
Fumigent Sterilant Both
Q.3 ________________ bioagent is used to control Parthennium histerophorus.
Zygograma Hypena jussalis Sameoides
Q.4 _______________ mycoherbicide is used to control Johnson grass.
Biolophos Bipolaris Collego
Q.5 ____________ crop suppresses weed growth by smothering effect.
Castor Cowpea Cotton
Q.6 _____________ herbicide is used as broad spectrum herbicide for weed control.
Pendimethalin Metoxuron Isoproturon
Q.7 An application of herbicide after emergence of weeds is known as ___________.
Pre-emergence Post-emergence Early post-emergence
Q.8 An application of herbicide at last cultivation in the crop is known as __________.
Lay-by-application Post emergence application Early post-emergence
Q.9 ___________ is a curative method for weed control.
Sieving Searing Keep vigilance
Q.10 An application of herbicide in restricted area of row length is known as_____ .
Spot application Blanket application Band application
Q.11 A text book entitled “Principles of weed science” is written by ________.
O. P. Gupta V. S. Rao N. C. Joshi
Q.12 Paraquat is a _______ herbicide.
Contact Translocated Both
Q.13 According to ontogeny, congress grass is classified as _______.
Annual Biannual Perennial
Q.14 _________ weed covered most of forest area in our country.
Lantana camera Communist weed Tiger grass
Q.15 _______ weed seed admix with wheat flour gives bread a bitter taste and irritates the gastric tract of the consumer.
Mexican poppy Salvinia Corncockel
Q.16 _______ weed is used for leafy vegetable.
Chicory Crotolaria Amranthus
Q.17 Lantana contains _______ toxic alkaloids.
Documarin Oxalate Lantradine-A
Q.18 _______ weeds has phenotypic mimicry in rice crop.
Samo Canry grass Crab grass
Q.19 _______ is a crop bound weed in mango orchard.
Loranthus Broom rape Witch weed
Q.20 _______ dormancy usually results of hard seed coat of weed.
Enforced Innate Induced
Q.21 ______ are helps to antagonize phytotoxicity of specific herbicide to specific plant.
Antidotes Modifiers Antagonists
Q.22 ______ allows herbicide to get through to the outer surface to inside of the treated area.
Penetrant Spreaders Humicants
Q.23 The study of relationship between communities of different weed spp. with their environment is known as _____ .
Climax community Ecological succession Weed synecology
Q.24 The presence of ______ weed is indicated by moisture stress appearance of the crop despite of adequate soil moisture.
Cattail Witch weed Canary grass
Q.25 The process of gene transfer to create herbicide resistance in crop plant is known as_________.
Transformation Transgenic Transgenes
Number of score out of 25 = Score in percentage =
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