Competitive Exams: Agriculture MCQs (Practice-Test 47 of 56)

  1. Which of the following pair of wheat rusts and alternate hosts are correctly matched?

      • Puccinia graminis tritici
      • Rberis vulgaris
      • Puccinia recondition tritici
      • Halictrum spp.
      • Puccinia striiformis
      • Alaris minor

    Select the correct answer using the codes given below:

    1. 1, 2 and 3

    2. 1 and 2

    3. 1 and 3

    4. 2 and 3

  2. Match List I (Crop disease) with List II (Pathogen) and select the correct answer:

    List-I List-II
    1. Tikka disease of groundnut

    2. Powder mildew of barley

    3. Yellow rust of wheat

    4. Downy mildew of grapes

    1. Erystphe graminis f. s. p. Hordei

    2. Puccinia striiformis

    3. Plasmopar vitivola

    4. Cerspor personata

    • A
    • B
    • C
    • D
      • 2
      • 1
      • 4
      • 3
      • 2
      • 3
      • 1
      • 4
      • 4
      • 1
      • 2
      • 3
      • 4
      • 3
      • 2
      • 1
  3. Which one of the following pair of crop and disease are correctly matched?

      • Cabbage
      • Early blight
      • Cucumber
      • Club root
      • Potato
      • Black wart
      • Tomato
      • White rust
  4. Which one of the following pair is not correctly matched?

      • Karnal bunt
      • Neovossia horrida of wheat
      • False smut of rice
      • Ustilaginoidea/virens
      • Hill bunt of
      • Tilletiafoetida wheat
      • Ear cockle of
      • Anguina tritici wheat
  5. Plant pathogenic vitrodis contain

    1. rNA only

    2. rNA and protein coat

    3. DNA and protein coat

    4. DNA only

  6. Loose smut of wheat is a/an

    1. Externally seed-rne disease

    2. Externally seed-rne and soil-rne disease

    3. Air-rne disease

    4. Internally seed-rne disease

  7. Which of the following ar the sources of survival of the wilt pathogen of sugarcane in India

    1. ratoon of infected crop

    2. Diseased plants debris

    3. Setts of diseases crop

    4. Collateral hosts

    Select the correct answer using the codes given below:

    1. 1, 2, 3 and 4

    2. 2 and 3

    3. 3 and 4

    4. 1, 2 and 3

  8. Which one of the following is the correct order in which they appear during biocontrol operations?

    1. Parasite, release, Mass rearing, Parasitism

    2. Mass rearing, Parasite, release, Parasitism

    3. release, Mass rearing, Parasite, Parasitism

    4. Parasite, Mass rearing, release

    Parasitism

  9. The following major events occur during the pathogenesis of a host by a pathogen.

    1. Landing of inoculums

    2. recognition

    3. Germination of the prop gules

    4. Penetration

    5. Establishment

    6. Development of symptom

    The correct sequence of these events in disease development is

    1. 1, 2, 3, 4, 5, 6

    2. 1, 3, 4, 2, 5, 6

    3. 1, 2, 4, 3, 5, 6

    4. 1, 3, 2.4. 5, 6

  10. Mycoplasma is sensitive to

    1. Penicillin

    2. Tetracycline

    3. Calixin

    4. Streptomycin

  11. Whor application of granular insecticide provides effective control measur against

    1. Spotted bollwosm

    2. Maize stem borer

    3. Stem borer of paddy

    4. Mango stem borer

  12. Match List I (Principles of disease control) with List II (Practices) and select the correct answer:

    List-I List-II
    1. Exclusion

    2. Avoidance

    3. Eradication

    4. Protection

    1. Spraying a common fungicide

    2. Chemical seed treatment

    3. Isolation in time and space

    4. Plant quarantine

    • A
    • B
    • C
    • D
      • 3
      • 4
      • 2
      • 1
      • 3
      • 4
      • 1
      • 2
      • 4
      • 3
      • 1
      • 2
      • 4
      • 3
      • 2
      • 1
  13. Which one of the following insecticides is capable of controlling mites as well?

    1. Endosulfan

    2. Toxaphene

    3. Cypermethrin

    4. Monocrotophos

  14. The safest method of disposing off the left over pesticide is disposal by

    1. Pouring in the drain

    2. Pouring in a pond

    3. Pouring in a moving stream

    4. Burying in the soil

  15. Which of the following types of manually operated sprayer ar suitable for spraying 4 to 5 meter tall plantations?

    1. Hand compression sprayer

    2. Knapsack sprayer

    3. Foot sprayer

    4. rocking sprayer

    Which is correct?

    1. 1, 2, 3 and 4

    2. 2 and 4

    3. 1, 2 and 3

    4. 3 and 4

  16. Which of the following protective measures ar necessar for a person manually dusting pesticide on crop in uncertain wind conditions?

    1. Wearing plastic aprons

    2. Use of rubbe3r gloves

    3. Use of plastic shoes

    4. Use of goggles

    5. Use of nose filters

    Select the correct answer using the codes given below:

    1. 1, 2, 3, 4 and 5

    2. 1, 2, 4 and 5

    3. 2, 3 and 4

    4. 1, 3 and 5

  17. If one gram of a pesticide form formulation containing 50% active ingredient is mixed with one liter of water, what will be the concentration of the active ingredient in the spray fluid?

    1. 0.5ppm

    2. 5.0ppm

    3. 50ppm

    4. 500ppm

  18. The main purpose of T and V programme is to

    1. Identify research problems

    2. Bring about co-dination in the administration of agricultural extension

    3. Update the technical knowledge and skills of agricultural extensions workers

    4. Help farmer in the adoption of latest innovations in agriculture

  19. An extension worker practically explain Japanese method of paddy cultivation to a group of farmer and also shows its superiority over the traditional method. In the process, which of the following communication methods have been used by him?

    1. Method demonstration

    2. Field visit

    3. result demonstration

    4. Study tour

    Which is correct

    1. 1, 2, 3 and 4

    2. 1 and 3

    3. 2 and 3

    4. 1, 2 and 4

  20. Consider the following statements: Extension in the long run means change in skill attitude

    1. Knowledge

    2. Skill

    3. Work

    4. Attitude

    Of these statements

    1. 1, 2 and 3 are correct

    2. 1, 3 and 4 are correct

    3. 1, 2 and 4 are correct

    4. 2.3 and 4 are correct

    • Assertion (A): In a planned agricultural economy, production of crops is dictated by policy considerations.
    • Reason (R): Self-fficiency cannot be achieved through free market forces.
    1. Both A and R are true and R is the correct explanation of A.

    2. Both A and rare true but r is not the correct explanation of A.

    3. A is true but r is false

    4. A is false but r is true.

    • Assertion (A): Soil organic matter plays a pivotal role in sustaining soil productivity and fertility.
    • Reason (R): Plant nutrients ar slowly released from soil organic matter.
    1. Both A and R are true and R is the correct explanation of A.

    2. Both A and rare true but r is not the correct explanation of A.

    3. A is true but r is false

    4. A is false but r is true.

    • Assertion (A): Cultivation of rice in the non-aditional area in India has increased.
    • Reason (R): Food habits of the people of non-ce growing areas have changed.
    1. Both A and R are true and R is the correct explanation of A.

    2. Both A and rare true but r is not the correct explanation of A.

    3. A is true but r is false

    4. A is false but r is true.

    • Assertion (A): In plant cells plasma lemma controls the flow of solutes into the cytoplasm. 8 of 1.
    • Reason (R): In plant cells, tonoplast regulates the transpor of solutes into and out of the vacuoles.
    1. Both A and R are true and R is the correct explanation of A.

    2. Both A and rare true but r is not the correct explanation of A.

    3. A is true but r is false

    4. A is false but r is true.

    • Assertion (A): The expected genetic gain as calculated by the formula Gs = k, O, H is applicable to a mixtur of pur lines or clones, but it is not applicable to segregating generations.
    • Reason (R): Pur lines or clones give rise to progenies which ar identical in genotype with the parent family and the plants in segregating generations ar likely to be heterozygous for a few or several genes.
    1. Both A and R are true and R is the correct explanation of A.

    2. Both A and rare true but r is not the correct explanation of A.

    3. A is true but r is false

    4. A is false but r is true.

    • Assertion (A): The F1 hybrids of Solanum melongena Muktakeshx Banaras giant and Muktakeshix Pusakranti exhibition increase over better parent as regarded yield.
    • Reason (R): Exploitation of hybrid vigour has attained considerable importance in most of the vegetables.
    1. Both A and R are true and R is the correct explanation of A.

    2. Both A and rare true but r is not the correct explanation of A.

    3. A is true but r is false

    4. A is false but r is true.

    • Assertion (A): Fruit quality is improved on pruning fruit trees.
    • Reason (R): Pruning improves fruit: Leaf ratio.
    1. Both A and R are true and R is the correct explanation of A.

    2. Both A and rare true but r is not the correct explanation of A.

    3. A is true but r is false

    4. A is false but r is true.

    • Assertion (A): Precooking of fruit and vegetables is done to reduce the rate of ripening process and extending shelf life.
    • Reason (R): Precooking is done to immediately remove the field heat.
    1. Both A and R are true and R is the correct explanation of A.

    2. Both A and rare true but r is not the correct explanation of A.

    3. A is true but r is false

    4. A is false but r is true.

    • Assertion (A): Philosophy of pest control based on eradication of pest species is the antithesis of integrated pest control.
    • Reason (R): Eradication of pest species leads to an unstable biotic community.
    1. Both A and R are true and R is the correct explanation of A.

    2. Both A and rare true but r is not the correct explanation of A.

    3. A is true but r is false

    4. A is false but r is true.

    • Assertion (A): The broad spectrum insecticide needs to be used for all agricultural crops.
    • Reason (R): Broad-ectrum insecticide kills a large variety of insects.
    1. Both A and R are true and R is the correct explanation of A.

    2. Both A and rare true but r is not the correct explanation of A.

    3. A is true but r is false

    4. A is false but r is true.