Competitive Exams: Agriculture MCQs (Practice-Test 13 of 56)

  1. Maximum residual acidity is associated with the continuous soil application of

    1. Urea

    2. Ammonium nitrate

    3. Ammonium sulphate

    4. Calcium ammonium nitrate

  2. The quantity of single super phosphate (16% P2O5) required for application to one acr of rice-eld at a dose of 60 kg P2O5 ha-is

    1. 250kg

    2. 200kg

    3. 150kg

    4. 100kg

  3. The most important potential contaminant of food produced on sewage-udge amended soils is

    1. Chromium

    2. Lead

    3. Zinc

    4. Cadmium

  4. Which of the following phytohormones is involved in nutrient mobilization?

    1. Gibberellin

    2. Cytokinin

    3. Auxin

    4. ABA

  5. Heavy applications of potassium fertilizers often lead to reduced absorption of

    1. Mg and Ca

    2. B and Mn

    3. N and P

    4. Zn and Cu

  6. Which one of the following nutrients is a constituent of cell wall in the plants?

    1. Nitrogen

    2. Phosphorus

    3. Sulphur

    4. Calcium

  7. Presence of ‘Kranz anatomy’ in leaf is characteristics of

    1. C2 plants

    2. C3 plants

    3. CAM plants

    4. C4 plants

  8. If a plant shows extensive interveinal chlorosis of the older leaves and later this reaches the younger leaves, the symptom is due to lack of

    1. Magnesium

    2. Calcium

    3. Phosphorus

    4. Copper

  9. Phenyl mercuric acetate (PMA) is a chemical used in agricultural crops in order to

    1. Increase CO2 uptake

    2. reduce respiration

    3. reduce transpiration

    4. Increase transpiration

  10. If on a 20 − r farm, crops ar raised on 15 acres in rabi, 15acres in Kharif and 20 acres in Zaid summer in a year what shall be the cropping intensity?

    1. 300%

    2. 400%

    3. 250%

    4. 150%

  11. ‘Water requirement’ includes the losses due to

    1. Evapotranspiration and application of water

    2. Consumptive use of water and application of water

    3. Consumptive use. Water required for special operations and other economically unavoidable losses of water

    4. Evapotranspiration and water required for special operations

  12. In a synthetic variety of maize produced by combining 10 lines, the loss of excess vigour in F2 generation will be

    1. ½

    2. ¼

  13. The equilibrium in a random-ting population is disturbed by selection, mutation, inbreeding, migration and genetic drift. In which situation the population may regain its original composition?

    1. Inbreeding and selection

    2. Mutation

    3. Migration

    4. Genetic drift

  14. Consider the following genotypes:

    1. Breeding lines

    2. Land races

    3. Variety under cultivation

    What is the correct sequence of these in terms of their importance to fanners?

    1. 1.2 and 3

    2. 2, 3 and 1

    3. 3, 1 and 2

    4. 1, 3 and 2

  15. The smallest unit of genetic material that cannot be divided but is interchangeable among units refer to

    1. Cistron

    2. Muton

    3. recon

    4. Plasmon

  16. Which is the correct ter to use, if the F1 obtained in a cross is back crossed with the recessive parent to get the F2 progeny?

    1. reciprocal cross

    2. Back cross

    3. Dihybrid cross

    4. Test cross

  17. What is the plausible Reason for availability of most of the tomato varieties in the market to be almost uniformly oval shaped and firm?

    1. Expansion in genetic diversity

    2. reduction in genetic diversity

    3. Cloning

    4. Floral abnormality

  18. in a cross if we get 8 types of gametes from both male female parents, the resultant selfing will produce a ration of

    1. 1: 1: 1: 1: 1: 1: 1: 1

    2. 9: 9: 9: 9: 3: 3: 3: 1

    3. 27: 9: 9: 9: 3: 3: 3: 1

    4. 9: 3: 3: 1

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

    List-I (Crop) List-II (Gene/Cytoplasm)
    1. Bajra

    2. Maize

    3. rice

    4. Wheat

    1. Deeronoon

    2. rht1 rht2

    3. Titoplasm

    4. Tift-23 − D2A

    • A
    • B
    • C
    • D
      • 4
      • 3
      • 1
      • 2
      • 2
      • 3
      • 1
      • 4
      • 2
      • 1
      • 3
      • 4
      • 4
      • 1
      • 3
      • 2
  20. Seedless watermelon is a

    1. Diploid

    2. Triploid

    3. Tetraploid

    4. Pentaploid

  21. Which one of the following is the correct sequence in terms of wheat varieties suitable for rained: Timely sown irrigated; late sown irrigated and ver late sown irrigated sowing situations?

    1. Sonalika, C − 6, UP 262 HD 2285

    2. C − 6. UP 262 HD 2285 Sonalika

    3. UP 262 HD 2285, C − 6 Sonalika

    4. HD 2285, Sonalika, UP 262 C − 6

  22. Which one of the following insect species feeds on cotyledons of mango nuts?

    1. Batocer rufomaculata

    2. rhynchaenus mangiferae

    3. Sternochetus mangiferae

    4. Deanolis albizonalis

  23. Consider the following diseases:

    1. Downy mildew of mustard

    2. Green ear of bajra

    3. White rust of crucifers

    Which of these diseases induce floral?

    1. 1, 2 and 3

    2. 1 and 2

    3. 2 and 3

    4. 1 and 3

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

    List-I (Insect Pests) List-II (Host Plants)
    1. Yellow stem borer

    2. Top borer

    3. Cotton jassids

    4. Diamond back moth

    1. Sugarcane

    2. Paddy

    3. Cabbage

    4. Okra

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 3
      • 4
      • 1
      • 2
      • 4
      • 3
      • 2
      • 1
      • 4
      • 3
      • 2
      • 1
      • 3
      • 4
  25. Which one of the following pair is not correctly matched? Rice Pests Features

      • Paddy
      • Gall fly
      • Sliver leaf
      • Rice
      • Bug
      • Repugnant smell
      • Rice
      • Stem borer
      • White ears
      • Rice
      • Zigzag
      • N/A
  26. Match List I with List II and select the correct answer:

    List-I (Genus of Nematode) List-II (Common Name)
    1. Meloidogyne

    2. Paratylenchus

    3. Pratylenchus

    4. Xiphenema

    1. root knot nematodes

    2. Pin nematodes

    3. Lesion nematodes

    4. Dagger nematodes

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 3
      • 4
      • 1
      • 2
      • 4
      • 3
      • 2
      • 1
      • 3
      • 4
      • 2
      • 1
      • 4
      • 3
  27. The Pulse beetle Callosobrunchus chinensis attacks

    1. Whole pulses only

    2. Split pulses only

    3. Both whole pulses and split pulses

    4. Whole, split and powdered pulses

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

    List-I (Biodent) List-II (Weed Controlled)
    1. Chryolina

    2. Dactylopius

    3. Zygogramma

    4. Tyria

    1. tansy rag wort

    2. Klamath weed

    3. congress weed

    4. Lantana

    • A
    • B
    • C
    • D
      • 1
      • 4
      • 2
      • 3
      • 3
      • 2
      • 4
      • 1
      • 1
      • 2
      • 4
      • 3
      • 3
      • 4
      • 2
      • 1
  29. Match List I with List II and select the correct answer:

    List-I (Fungicide) List-II (Group)
    1. Indofil

    2. Sulfex

    3. Plantomycin

    4. Emisan

    1. Mercury

    2. Dithiocarbasmate

    3. Sulphur

    4. Antibiotic

    • A
    • B
    • C
    • D
      • 2
      • 1
      • 3
      • 4
      • 2
      • 3
      • 4
      • 1
      • 4
      • 1
      • 3
      • 2
      • 4
      • 3
      • 1
      • 2
  30. Which one of the following diseases of pigeon is transmitted by Eryophid mite?

    1. Phytophthor stem rot

    2. Cercospor leaf spot

    3. Yellow mosaic

    4. Sterility mosaic