Competitive Exams: Agriculture MCQs (Practice-Test 45 of 56)

  1. On the basis of total mass, the relative abundance of the given elements in the earth's crust is such that

    1. Si > O2 > Fe > Al

    2. O2 > Al > Si > Fe

    3. O2 > Si > Fe > Al

    4. O2 > Si > Al > Fe

  2. Consider the following phenomena/events:

    1. Weathering

    2. Biogrowth

    3. Soil development

    4. Profile differentiation

    The correct chronological sequence of these phenomena/events is

    1. 2, 1, 3, 4

    2. 1, 2, 4, 3

    3. 1, 2, 3, 4

    4. 2, 1, 4, 3

  3. Which one of the following sets of soil conditions is mor suitable for plant growth?

    1. Sandy soils with high aeration and low water holding capacity

    2. Clay soils with high water holding capacity and low aeration

    3. Organic soils with high water holding capacity and low aeration

    4. Loamy soils with medium aeration and medium water holding capacity

  4. Phosphorus fixation refer to the phenomenon of

    1. Absorption of phosphorus by the plant and synthesis of biological compounds

    2. Leaching of phosphorus from soil by percolating waters

    3. Conversion of soluble phosphorus into plant unavailable forms

    4. Anion exchange with colloidal constituents of soil

  5. Consider the following materials:

    1. Montmorillonite

    2. Humus

    3. Kaolinite

    4. Illite

    The correct sequence of these materials is decreasing order of their CEC is

    1. 1, 2, 3, 4

    2. 2, 1, 3, 4

    3. 2, 1, 4, 3

    4. 1, 2, 4, 3

  6. Which one of the following pair is not correctly matched?

      • Expanding type
      • Gher water of clay minerls
      • High calcium content in soil
      • On chlorisis
      • Water inundated
      • Gh nitrogen soils mineralization
      • Sandy soils
      • Split application of fertilizers
  7. Tolerance to soil salinity of the given set of crops is such that

    1. Barley > wheat > upland paddy > beans

    2. Barley > wheat > beans > upland paddy

    3. Wheat > barley > beans > upland paddy

    4. Wheat > barley > upland paddy > beans

  8. Hydraulic conductivity of soils varies directly with

    1. Capillar porosity

    2. Non-pillar porosity

    3. Total porosity

    4. N/A

  9. In respect of a sugarcane crop to be grown in an acidic soil having high P-xing capacity the fertilizer of choice would be

    1. Triple super phosphate

    2. Finely ground rock phosphate

    3. Coarse rock phosphate

    4. Super phosphate

  10. For preparing a mixed fertilizer 100 kg of ammonium sulphate and 125kg of single superphosphatae wer mixed. 25 kg of filler was added to this mixture. In terms of N P2 O5 K2O, their fertilizer grade of this mixtur will be

    1. 550

    2. 5100

    3. 880

    4. 10100

  11. Use of materials like sulphur polyfor UF, isobudtylidene diurea etc. Improves fertilizer use efficiency. When such additives ar used, the N-rtilizer are termed as

    1. Prilled urea

    2. Controlled release nitrogenous fertilizers

    3. Slow nitrifying N-rtilizers

    4. Complex fertilizers

  12. Consider the following statements regarding enzymes in living plants

    1. They ar specific.

    2. They ar sensitive to heat.

    3. The reactions caused by enzymes are reversible.

    4. They exist in a colloidal state. Of these statements

      1. 1 and 2 are correct

      2. 1, 3 and 4 are correct

      3. 2, 3 and 4 are correct

      4. 1, 2, 3 and 4 are correct

  13. Which one of the following plants nutrients is useful; in increasing resistance to diseases and insect pests?

    1. Calcium

    2. Phosphorus

    3. Nitrogen

    4. Potassium

  14. Parts of cell walls in plants ar given in List I and their distinctive components are given in List II. Match the two lists and select the correct answer using the codes given below:

    List-I List-II
    1. Primar wall

    2. Secondar Wall

    3. Middle lamella

    4. Plasma lemma

    1. Hemicelluloses

    2. Lignin

    3. Lipids and proteins

    4. Pectin

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 3
      • 4
      • 2
      • 1
      • 4
      • 3
      • 2
      • 1
      • 3
      • 4
      • 1
      • 2
      • 4
      • 3
  15. Soils with high pH ar generally deficient in

    1. Zn and Mn

    2. B and Fe

    3. Cu and Mo

    4. Ca and Mg

  16. During the conversion of each molecule of glucose into pyruvic acid through the glycol tic cycle

    1. One molecule of ATP is consumed and two molecules of ATP ar generated

    2. Two molecules of ATP ar consumed and two molecules of ATP are generated

    3. One molecule of ATP and four molecules of ATP ar generated

    4. Two molecules of ATP ar consumed and four molecules of ATP are generated

  17. What is the correct chronological sequence of the following discoveries related to mechanism of photosynthesis?

    1. Calvin's cycle

    2. Hatch and slack cycle

    3. Hill reaction

    4. red drop