Competitive Exams: Agriculture MCQs (Practice-Test 17 of 56)

  1. Bio-rtilizer are

    1. Dead organisms mixed with essential nutrients in fairly large amounts

    2. Living organisms mixed with large amount of essential nutrients

    3. Living organisms containing no essential nutrients but they either fix or mobilize nutrients

    4. Inorganic fertilizer mixed with organic manures

  2. Consider the following materials having different neutralizing values (ability to neutralize the soil acidity):

    1. Calcium carbonate

    2. Calcium hydroxide

    3. Calcium oxide

    4. Magnesium carbonate

    The correct sequence in the increasing order of neutralizing values of these liming materials would be

    1. 1____

    2. 2--1

    3. 1____

    4. 4____

  3. Which one of the following anaerobic micr organisms fixes atmospheric nitrogen non-mbiotically?

    1. rhizobium

    2. Azatobacter

    3. Clostridium

    4. rhodospirillum

  4. Which one of the following crops responds well to the application of sulphur?

    1. Cereals

    2. Pulses

    3. Oilseeds

    4. Fiber crops

  5. Consider the following statements: Integrated nutrient management system

    1. Minimizes the use of chemical fertilizers.

    2. Minimizes the use of organic manures.

    3. Maximizes efficient use of resources for enhancing soil fertility and productivity.

    4. Maximizes the use of chemical fertilizers.

    Which of the statements given above are correct?

    1. 1 and 2

    2. 2 and 3

    3. 3 and 4

    4. 1 and 3

  6. Which of the following ar the criteria used to designate an element as “essential element” in plants?

    1. It should have a clear physiological role

    2. Its absence prevents the plants from completing its life-cle

    3. It is required for all metabolic processes in plants

    4. Its absence cannot be satisfied by supplementing with another essential element

    Select the correct answer using the codes given below:

    1. 1, 2 and 3

    2. 1 and 4

    3. 1, 2 and 4

    4. 3 and 4

  7. Which of the following is/ar components of water potential of cell?

    1. Pressur potential and osmotic potential

    2. Metric potential

    3. Osmotic potential

    4. Diffusion pressur deficit

    Select the correct answer using the codes given below:

    1. 1 only

    2. 1 and 2

    3. 1 and 4

    4. 2 and 3

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

    List-I (Nutrient) List-II (role)
    1. Calcium

    2. Zinc

    3. Boron

    4. Potassium

    1. Pollen germination

    2. Translocation

    3. IAA synthesis

    4. Cell wall formation

    • A
    • B
    • C
    • D
      • 4
      • 2
      • 1
      • 3
      • 1
      • 3
      • 4
      • 2
      • 4
      • 3
      • 1
      • 2
      • 1
      • 2
      • 4
      • 3
  9. The correct sequence of substances with ascending order of respirator quotient is

    1. Fats-proteins-carbohydrates-malic acid-oxalic acid

    2. Proteins-fats-carbohydrates-Oxalic acid-malic acid

    3. Carbohydrates-fats-proteins-malic acid-oxalic acid

    4. Malic acid-carbohydrates-oxalic acid-fats-proteins

  10. The following scientists unraveled the process of photosynthesis:

    1. Calvin

    2. Hatch and Slack

    3. Hill

    4. Blackman

    The chronological order in which the above worked to know the details of photosynthesis is

    1. 4____

    2. 4--1

    3. 1____

    4. 1____

  11. Consider the following statements: Heat shock proteins ar synthesized as a response to withstand heat stress and these proteins ar unique to

    1. High temperature

    2. ABA treatment

    3. Low temperature

    Which of the statements given above are?

    1. 1, 2 and 3

    2. 1 and 2

    3. 2 and 3

    4. 1 and 3

  12. Which one of the following changes is attributable to exogenous application of Gibberellic Acid to plants?

    1. Inhibition of lateral buds

    2. Induced parthenocarpy

    3. Leaf abscission

    4. Early senescence

  13. Induction of abscission, dormancy and closing of stomata in leaves ar the characteristic functions of which one of the following hormones?

    1. Ethylene

    2. Auxin

    3. Abscisic acid

    4. Gibberellins

  14. Which one of the following tissue systems acts as a plants'first line of defense against pests and diseases?

    1. Collenchyrna

    2. Ground tissue

    3. Epidermis

    4. Sclerenchyma

  15. A chromosomal segment of highly condensed genetic material that is largely devoid of active genes is

    1. Centr mere

    2. Nucleosome

    3. Euchromatin

    4. Heterochrornatin

  16. Consider the following statements:

    1. Cell sap (in plants) is relatively more dense than the surrounding cytoplasm

    2. Centnoles ar not found in plant cells

    Which of the above statements is/are correct?

    1. 1 only

    2. 2 only

    3. Both 1 and 2

    4. Neither 1 nor 2

  17. recessive alleles could be identified experimentally by crossing potential carrier to

    1. Any individual

    2. Homozygous individuals

    3. Heterozygous individuals

    4. Homozygous individuals

  18. Which one of the following causes disease called ‘Little leaf of brinjal’

    1. Nematode

    2. Mycoplasma

    3. Virus

    4. Bacteria

  19. Which one of the following training systems of grape is not practiced in India?

    1. Bower

    2. Kniffin

    3. Telephone

    4. Flat roof Gable

  20. Which one of the following vegetables should not be recommended for intercropping in pre-faring orchard?

    1. Pea

    2. French bean

    3. Pumpkin

    4. Cowpea

  21. Which one of the following sequences is correct in terms of descending order of ascorbic acid content?

    1. Aonla-sweet orange-guava Pineapple

    2. Guava Aonla Sweet orange Pineapple

    3. Pineapple Aonla-guava-sweet orange

    4. Aonla-guava-sweet orange-Pineapple

  22. Which one of the following sets of companion crops is not advisable for?

    1. Brinjal and Spinach

    2. Pea and Tomato

    3. Potato and radish

    4. Brinjal and Pointed Gourd

  23. Zer energy cool chamber operates on the principle of

    1. Second law of thermodynamics

    2. Evaporative cooling

    3. Boyle's law

    4. Charlie's law

  24. Which one of the following chemicals is not an antioxidant?

    1. Calcium propionate

    2. Propyl gal late

    3. Stannous chloride

    4. Ascorbic acid

  25. The following four horticultural commodities ar exported:

    1. Fresh mango

    2. Fresh onion

    3. Dried nuts (Walnut)

    4. Fresh grapes

    The correct sequence in the increasing order of expor earning is

    1. 3____

    2. 4--2

    3. 3____

    4. 2____

  26. Citronella is used for

    1. Flavoring the cosmetics and soaps

    2. recover of health

    3. Curing respirator troubles

    4. Checking bleeding

  27. Match List I (Medicinal Plants) with List II (Drugs for which Grown) and select the correct answer

    List-I List-II
    1. Catharanthus roseus

    2. Cinchona sp.

    3. Papaver somniferum

    4. Hyocyamus niger

    1. Vinablastme

    2. Atropine

    3. Quinine

    4. Codeine

    • A
    • B
    • C
    • D
      • 4
      • 3
      • 1
      • 2
      • 1
      • 2
      • 4
      • 3
      • 4
      • 2
      • 1
      • 3
      • 1
      • 3
      • 4
      • 2
  28. The medicinal plant known as ‘Second Shilajeet’ is

    1. Asparagus

    2. Safed Musli

    3. Kal Megh

    4. Isabgol

  29. Which one of the following diseases can be controlled by use of metalaxyl fungicide?

    1. Powder mildew

    2. Downy mildew

    3. Grey mildew

    4. Bacterial blight

  30. Which one of the following can be classified as semi-nd parasite?

    1. root-not nematode

    2. Citrus nematode

    3. Golden cyst nematode

    4. Lance nematode