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WorksheetsHost Plant Resistance and innovative approaches in pest control TVP
Total questions: 52
Worksheet time: 26mins
Father of host plant resistance is
Rnippling
Snodgrass
Hagstrum
R. H. Painter
The earliest documented case of insect resistance is against
Wheat stem sawfly
Hessian fly
Sorghum shoot fly
Screw worm fly
The non - preference plant resistance to insects is also known as
Antibiosis
Antixenosis
Tolerance
Host evasion
The pest which occurs in an isolated condition is
Sporadic pest
Regular pest
Key pest
Occasional pest
The pest which is restricted to particular locality
Sporadic pest
Regular pest
Endemic pest
Key pest
An important major pest species in the complex of pests attacking a crop
Sporadic pest
Regular pest
Endemic pest
Key pest
Pest which occurs regularly and in serious manner is known as
Sporadic
Pandemic
Endemic
Epidemic
Which of the following is a kairomone ?
Excitants
Attractants
Both (a) and (b)
Repellents
Which of the following is an allomone ?
Repellents
Attractants
Excitants
All the above
A type of apparent host plant resistance in which a particular plant condition or environmental state makes a plant more resistant to pests than under other circumstances
Acquired resistance
Permanent resistance
Horizontal resistance
Induced resistance
Host plant resistance in which the plant passes through a susceptible stage quickly is
Host escape
Host tolerant
Host resistance
Host evasion
Population capable of damaging and surviving on plants previously known to be resistant to other populations of the same species
Biotype
Biospecies
Biotic agents
None of the above
The occurrence of asparagines in minute quantities was considered to be the primary cause of resistance to brown plant hopper in rice variety
GEB24
IR 26
TNI
Mudgo
Yellow sticky trap is used for attracting
Aphids
Leaf miners
Scale insects
Mealy bugs
Aflatoxin is produced by
Bacillus
Aspergillus
Fusarium
Pythium
A phenomenon where a species is characterized by low reproductive rate and high survival rate is called
k - strategist
r - strategist
q - strategist
None of the above
Use of resistant varieties in the IPM is an example of
Biological control
Chemical control
Cultural control
Generic control
Major gene resistance is also called
Horizontal
Oligogenic resistance
Vertical resistance
Induced resistance
The type of resistance is effective against certain specific biotypes of the insect but not others
Vertical resistance
Specific resistance
Both (a) and (b)
Horizontal resistance
DIMBOA is considered to be resistance factor against European corn borer in
First generation
Second generation
Third generation
Fourth generation
A multiple insect and disease resistant variety which is grown on more than 11 million ha in the world is
IR6
IR16
IR26
IR36
Theory of chemosensory bases of host selection was proposed by
Dethier
Morgan
Hagstrum
R. H. Painter
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
Kairomone
Pheromone
Synomone
Aneumone
Use of light traps for the management of pest is an example of
Mechanical control
Chemical control
Cultural control
Biological control
The correct sequence in host plant selection process in phytophagous insects is
Host habitat finding - Host finding - Host recognition – Host acceptance - Host suitability
Host habitat finding - Host finding - Host acceptance – Host recognition - Host suitability
Host habitat finding - Host finding - Host recognition – Host suitability - Host acceptance
None of the above
The nutrition value of the plant and absence of toxic compound help in the process of
Host finding
Host recognition
Host acceptance
Host suitability
Which of the following is a type of Ecological Resistance ?
Host evasion
Induced resistance
Escape
All the above
A plant may pass through the most susceptible stage quickly or at time when insect number is less is called
Host evasion
Induced resistance
Escape
All the above
Increase in resistance temporarily as result of some change conditions of plant or environment
Host evasion
Induced resistance
Escape
All the above
The type of mechanism in which adverse effect of the host plant on the biology of the insects
Antixenosis
Antibiosis
Tolerance
All the above
Horizontal resistance is governed by
Single gene
Few genes
Many genes
All the above
Which one of the following is a strategy to overcome development of biotypes?
Pyramiding of major genes
Incorporation of horizontal resistance
Breeding tolerant varieties that exert no selection pressure on the insect
All the above
The number of biotypes in rice brown plant hopper is
5
6
7
8
The number of biotypes in rice gall midge is
12
13
10
8
Maximum number of insect biotypes is observed in
Brown plant hopper
Gall midge
Hessian fly
Pea aphid
Maximum number of insect biotypes is observed in the insect group
Aphids
Whiteflies
Midges
Hoppers
The occurrence of benzyl alcohol in minute quantities in barley was considered to be the primary cause of resistance to
Green bug
Aphids
Borer
None of the above
Which one of the following is an advantage of host plant resistance ?
Specificity
Compatibility
Decreases pesticide application
All the above
Which one the following is limitation of host plant resistance ?
Time consuming
Genetic limitations
Biotype development
All the above
Which of the following is repellent to mosquitoes ?
DEET
Oil of citronella
Dimethyl phthalate
All the above
Which of the following is a chitin synthesis inhibitor ?
Buprofezin
Teflubenzuron
Flufenoxuron
All of these
The term "Third Generation Pesticides" refers to
Moulting hormones
Anti moulting hormones
Juvenile hormones
Anti juvenile hormones
Which of the following is juvenile hormone analog ?
Hydroprene
Juvabione
Methoprene
All of these
Pheromones used for the following purpose requires no registration
Monitoring
Mass trapping
Mating disruption
Both (a) and (b)
In which of the following insects species males produce pheromone?
Red palm weevil
Banana corm weevil
Cotton boll weevil
All the above
Which of the following is used for mating disruption of pink bollworm of cotton ?
P. B. Rope-L
PG Rope - L
HL-Rope
HP - Rope 536
The following pheromone is used for mating disruption technique
HL Rope
HP Rope
PB Rope L
All the above
The type of pheromone in red palm weevil, Rhynchophouous ferrugineus is
Sex pheromone
Aggregation pheromone
Trail marking pheromone
Alarm pheromone
Which of the following tool is / are used to measure the behaviour of insect towards the odour source ?
Wind tunnel
Y olfacto meter
Both a and b
None of the above
In which of the following insects species males produce pheromone ?
Trichoplusia ni
Danaus gilippus
Ceratitis capitata
All the above
Which of the following is a chemosterilant ?
TEPA
METEPA
Thio-TEPA
All the above
A chemical which give adaptive advantage to the receiver but not to the emitter is
Pheromone
Kairomone
Synomone
Apneumone
