Agriculture - Mock Test 21

Question 201

Inorganic salts are toxic to insects by?

A) Contact B) Ingestion C) Both of the above D) Inhalation

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Question 202

Indiscriminate use of pesticides and cultivation of high yielding crop varieties often leads to?

A) A minor disease or insect pest problem becoming serious threat B) Destruction of natural enemies of pests C) Appearance of pesticides resistant pest strains D) All of the above

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Question 203

Indicate, which represent the analogous group?

A) Wings of butterfly and birds B) Fore leg of horse and arm of a man C) Fore wings of moth and fins of fishes D) Hind wings of butterfly and legs of birds

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Question 204

Indicate the correct sequence through which the following insecticide came into use?

A) BHC, Rotenone, Malath ion and Lead arsenate B) Lead arsentate, Rotenone, BHC and Malathion C) BHC, Rotenone, Lead arsenate and Malathion D) Rotenone, BHC, Lead arsenate and Malathion

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Question 205

Which one of the following truly diagnoses the infestation by the sorghum shoot fly?

A) Formation of 'dead heart' in the early seedling stage of sorghum which can be easily pulled out B) Formation of 'dead heart' and a bunchy top during the later seedling stage of sorghum C) Formation of 'dead heart' which cannot be easily pulled out during the later seedling stage of sorghum D) Formation of silvery shoot during the early seedling stage of sorghum

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Question 206

Which one of the following types of spraying is best done by manually operated knapsack sprayer having flat fan nozzle?

A) High volume B) Low volume C) Ultra low volume D) Semi low volume

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Question 207

In which order females have no pupal stage but males have?

A) Mellophaga B) Strepsiptera C) Epemeroptera D) Dictyoptera

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Question 208

In which of the following insect the spiracles are absent?

A) Cecidomyid larvae B) Chironomid larvae C) Mycetophilid larvae D) Psycodid larvae

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Question 209

In the reduction of a pest population, the balance of the natural enemies is maintained in?

A) Pest management B) Pest control C) Pest eradication D) None of these

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Question 210

In the formation of cuticle which of the following layer is secreted first?

A) Exocuticle B) Endocuticle C) Wax layer D) Cuticulin layer

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