Competitive Exams: Agriculture MCQs (Practice-Test 31 of 56)

  1. With four bases A, U, G and C the possible number of triplet codons ar 64. If ther is no uracil, the number of codons will be

    1. 3/64

    2. 9/64

    3. 27/64

    4. None of the above

  2. A mendelian population means

    1. Self-llinated population

    2. Inbred population

    3. random-ting population

    4. Hybrid population

  3. Which one of the following is the site of protein synthesis?

    1. ribosome's

    2. t-A

    3. m-A

    4. r-A

  4. When homologous chromosomes fail to pair in Prophase-of melosis, the phenomenon is known as

    1. Desynapsis

    2. Non-sjunction

    3. A synapses

    4. Disjunction

  5. Which one of the following chemicals is used to induce polyploidy?

    1. Ethyl methane sulphonate

    2. Methyl methane sulphonate

    3. Colchicines

    4. Nitrous acid

  6. Which one of the following will be most suitable for growing under arid zone of India?

    1. Jack fruit

    2. Papaya

    3. Sweet Orange

    4. Ber (jujube)

  7. Which of the following stone fruits are grown in the plains of North India?

    1. Peach

    2. Plum

    3. Pear

    Select the correct answer from the codes given below:

    1. 1 and 2

    2. 2 and 3

    3. 1 only

    4. All 1, 2 and 3

  8. Which is the correct sequence of the floral parts of a Pumpkin?

    1. Ovary, corolla and stigmatic lobes

    2. Corolla, stigmatic lobes and ovary

    3. Stigmatic lobes, ovar and corolla

    4. Corolla, ovar and stigmatic lobes

  9. Which one of the following soils is best for vegetable cultivation?

    1. Sandy

    2. Sandy loam

    3. Clay loam

    4. Clay

  10. The most widely used plant growth substance grape cultur for reducing compactness of bunches and improving berr size is

    1. NAA

    2. GA2

    3. IAA

    4. 2, 4 − D

  11. The ill effects of submergence of roots of deciduous fruits plants in water for very long time, is due primarily to

    1. Lack of nutrients

    2. Lack of aeration

    3. Excess of moisture

    4. Poor absorption of moisture

  12. Which one of the following groups of crops is most suitable and recommended for inter-opping in the young orchards?

    1. Shor duration fodders

    2. Shor duration fruit crops

    3. Poplar and Eucalyptus

    4. Shor duration legume vegetables

  13. The main objective of growing intercrops with the main fruit crop is to

    1. Help the fruit crop to grow better

    2. Improve the soil fertility

    3. Check soil erosion

    4. None of the above

  14. In relation to crop rotation which one of the following statements is incorrect?

    1. Legume may be followed by nonlegume

    2. Vegetable susceptible to a particular pest should be followed by a resistant one

    3. Heavy feeder should be followed by low feeders

    4. Deep rooted crop should be followed by same type of crop

  15. Which one of the following vegetables is the richest source of protein?

    1. Pea

    2. Fenugreek

    3. Pointed Gourd

    4. Cucumber

  16. Which one of the following is the main cause for development of color pigment in the flave do of matur ripe Orange fruit?

    1. Hesperidin

    2. Naringin

    3. Carotene

    4. Chlorophyll

  17. Which one of the following f r u i t s will be most useful in human diet for avoiding survey disease?

    1. Mandarin Orange

    2. Guava

    3. Aonla (Phyllanthus emblica)

    4. Apple

  18. Citrus fruits can be preserved for a few weeks at room temperatur by

    1. Submerging them in cold water and then drying

    2. Keeping them in well ventilated room

    3. Putting them in an atmospher rich in CO2

    4. By wrapping individual fruit in HDP envelopes

  19. Sodium benzoate is added for preservation of most of fruit juices in the concentration of

    1. 01.05%

    2. . 06.10%

    3. 1.11. 5%

    4. 1.62. 0%

  20. What is the chemical formula of potassium metabolic sulphite, the most common preservative?

    1. KMS

    2. K2SO2

    3. KSO2

    4. K2S2O3

  21. What is the correct sequence in which the following events occur during pathogenesis or disease cycle?

    1. Penetration

    2. Colonization

    3. Infection

    4. Exit of pathogen

      1. 1, 3, 2, 4

      2. 1, 2, 3, 4

      3. 3.1, 2, 4

      4. 4, 2, 3, 1

  22. Which one of the following is the cause of “Spreading decline” of citrus?

    1. Citrus nematode (Tylenchulus semipentrans)

    2. Burrowing nematode (radopholus similis)

    3. Fungaldisease

    4. Nutritional deficiency

  23. The incidence of “White grubs” is heavy in

    1. Heavily water-gged fields

    2. Dr fields having sandy-am soil

    3. Dr fields of heavy clay soil

    4. Deser land having little vegetation

  24. Which one of the following helps in maintaining the shape of nematodes?

    1. Pseudocoelomic fluid

    2. Cuticle and muscles

    3. Pseudocoelome

    4. Annulations of cuticle

  25. Green leaf hopper of paddy is the primary vector of

    1. Tungr disease

    2. Sheath rot disease

    3. Kresekdisease

    4. Ufr disease

  26. White ear-ead in paddy is caused by

    1. Gallfly

    2. Green leaf hopper

    3. Yellow stem borer

    4. Stinkbug

  27. Match List I with List II and select the correct answer:

    List-I (Contribution) List-II (Scientist)
    1. A fungus is the cause of wheat-nt disease

    2. Moder techniques of growing microorganism in pur culture

    3. Discover of disease cycle of wheat rust in India befor 1 947

    4. Introduced the Viroid

    1. K C Mehta

    2. T O Diener

    3. Prevost

    4. Brefeld

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 3
      • 4
      • 2
      • 3
      • 1
      • 4
      • 3
      • 4
      • 1
      • 2
      • 4
      • 1
      • 2
      • 3
  28. Which one of the following types of spraying is best done by manually operated knapsack sprayer having flat-n nozzle?

    1. High volume

    2. Low volume

    3. Ultr low volume

    4. Semi-w volume

  29. Domestic quarantine exists in India against

    1. Panama disease of banana

    2. Potato root eelworm

    3. San Jose scale

    4. Sugar beet eelworm

    Select the correct answer using the codes given below:

    1. 1 and 4

    2. 1 and 2

    3. 2 and 3

    4. 2, 3 and 4