Competitive Exams: Agriculture MCQs (Practice-Test 3 of 56)

  1. In ‘three line system’ of hybrid seed production program, the hybrid seed is produced by crossing

    1. A x B line

    2. A x r line

    3. B x r line

    4. H x B line

  2. The performance expected in F2 for a synthetic formed from any number of inbred lines can be predicated by the formula

    1. F2 = F1 + 2.50

    2. 2 1 1 1 F = F + P + P

    3. 2 1 1 1 F = F2 P + P

    4. 1 2 1 F P F F n2 = ^2

  3. With ten inbred lines, the possible number of double cross hybrids would be

    1. 510

    2. 630

    3. 720

    4. 840

  4. Varieties produced by open pollination amongst a number of outstanding strains usually not tested for combining ability with each other ar called

    1. Multilines

    2. Isogenic lines

    3. Allogamous varieties

    4. Composite varieties

  5. The maize composite having opaque-2 gene is

    1. rattan

    2. Ganga-2

    3. Chandan safed-2

    4. Amber pop

  6. Match List I (Name of the varieties) with List II (related crop species) and select the correct answer:

    List-I List-II
    1. HD 1553

    2. Pankaj

    3. Varuna

    4. Ak

    1. Arachis hypogaea

    2. Brassica juncea

    3. Oryza sativa

    4. Triticum aestivum

    • A
    • B
    • C
    • D
      • 2
      • 3
      • 4
      • 1
      • 4
      • 3
      • 2
      • 1
      • 4
      • 1
      • 2
      • 3
      • 3
      • 4
      • 1
      • 2
  7. Match List I (Crop) with List II (Isolation distance for seed production) and select the correct answer:

    List-I List-II
    1. rice/Wheat

    2. Bajr (Foundation seed)

    3. Maize (foundation seed)

    4. Barley

    1. 400m

    2. 3m

    3. 3m

    4. 1000m

    • A
    • B
    • C
    • D
      • 3
      • 4
      • 1
      • 2
      • 2
      • 4
      • 1
      • 3
      • 3
      • 1
      • 4
      • 2
      • 1
      • 2
      • 3
      • 4
  8. Which one of the following is the correct sequence of meiotic events?

    1. Formation of synaptonemal complex, recombination, separation of homologous chromosomes, segregation of sister chromatids

    2. Formation of synaptonemal complex, recombination, segregation of sister chromatids, separation of homologous chromosomes

    3. recombination, formation of synaptonemal complex, segregation of sister chromatids, separation of homologous chromosomes

    4. Separation of homologous chromosomes, formation of synaptonemal complex, recombination, segregation of sister chromatids

  9. Match List I (Term) with List II (Symbol) and select the correct answer:

    List-I List-II
    1. Nullisomic

    2. Monosomic

    3. Trisomic

    4. Tetrasomic

    1. 2n1

    2. 2n2

    3. 2n + 1

    4. 2n + 2

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 3
      • 4
      • 2
      • 1
      • 3
      • 4
      • 2
      • 1
      • 4
      • 3
      • 4
      • 3
      • 1
      • 2
  10. Heterostyly natur of a species can be identified by the occurrence of styles and stamens of different lengths in

    1. Flower of different branches of the same plant

    2. Flower of different plants of a single species

    3. Different flower of the same plant

    4. Plants of a single species grown in different localities

  11. In simple recurrent selection when the character under selection can be easily evaluated on the basis of phenotypes of the selected plants, the following steps are adopted to ensur isolation of superior inbreeds:

    1. Several phenotypic ally superior plants ar self-llinated, desirable phenotypes selected and harvested separately in original selection

    2. Intercross seeds of original selection ar compo sited, then self-llinated and desirable phenotype selected which ar harvested separately in first recurrent selection

    3. Separate progeny rows ar grown from the selected plants of the original selection, intercrossed in all possible combinations and seeds compo sited

    4. Equal seeds from all the intercrosses from recurrent selection compo sited to produce the next generation

    5. Progeny rows of first recurrent selection grown and all possible intercrosses made by hand

    The correct sequence of these steps is

    1. 1, 3, 2, 5, 4

    2. 2, 1, 3, 4, 5

    3. 3, 2, 4, 5, 1

    4. 1, 3, 2, 4, 5

  12. High mountains regions of South America (Peru, Bolivia, Ecuador Columbia) is the centr of origin of

    1. Triticum durum

    2. Glycine max

    3. Solanum tuberosum

    4. Oiyza sativa

  13. Match List I (Vegetable) with List II (Predominating alkaloid/principle) and select the correct answer:

    List-I List-II
    1. Garlic

    2. Colocasia (corm)

    3. Chillies

    4. Onion

    1. Oxalic acid

    2. Allyl propyl disulphide

    3. Di-adelyl disulphide

    4. Capsaicinoids

    • A
    • B
    • C
    • D
      • 3
      • 4
      • 1
      • 2
      • 2
      • 3
      • 4
      • 1
      • 4
      • 1
      • 2
      • 3
      • 3
      • 1
      • 4
      • 2
  14. Pusa Upkar is a variety of

    1. Tomato

    2. Brinjal

    3. Chilli

    4. Okra

  15. For the growth of banana plant, the optimum temperatur range will be

    1. 25° C to 40° C

    2. 18° C to 32° C

    3. 18° C to 22° C

    4. 10° C to 20° C

  16. Pusa Swarnima has been developed through a cross between

    1. Japanese White x Snow Ball

    2. Japanese White x Golden Ball

    3. Local red round x Golden Ball

    4. Golden Ball x Japanese White

  17. Consider the following annuals:

    1. Hollyhock

    2. Linum

    3. Mesembranthemum

    4. Phlox

    The correct sequence of their arrangement: In terms of the ascending order of their heights is

    1. 3, 4, 2, 1

    2. 4, 2, 1, 3

    3. 3, 2, 4, 1

    4. 1, 2, 4.3

  18. Seedless guava trees bear poor crop of rather small irregular fruit, because

    1. The trees ar over-gorous

    2. The trees lack vigour

    3. The trees cannot be properly grafted to a suitable rootstock

    4. Seedless guavas ar triploid

  19. Match List I (Common names of plant) with List II (Botanical names) and select the correct answer:

    List-I List-II
    1. Dog flower

    2. Flames of forest

    3. Four o'clock

    4. rangoon Creeper

    1. Butea monosperma

    2. Mirabilis jalapa

    3. Antirrhinum majus

    4. Quisqualis indica

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 3
      • 4
      • 4
      • 3
      • 2
      • 1
      • 3
      • 1
      • 2
      • 4
      • 3
      • 1
      • 4
      • 2
  20. Eugenol extracted from clocimum is used as a/an

    1. Diuretic

    2. Anti-flammatory

    3. Anticoagulant

    4. Analgesic

  21. Consider the following plants:

    1. Lemon grass

    2. Palmrosa

    3. Vetiver

    4. Spearmint

    The aerial parts of which of these plants ar used for obtaining essential oils?

    1. 1, 2 and 3

    2. 1, 2 and 4

    3. 2, 3 and 4

    4. 1, 3 and 4

  22. Consider the following statements pertaining to grafting:

    1. Maintenance of proper polarity is essential if the graft union is to be permanently successful

    2. Complete bar of the scion stick should be removed befor grafting

    3. Water should be supplied regularly at the joint of stock and scion

    4. Stock and scion should be joined together to establish good contact between the cambium layer of stock and scion

    Which of the above statements are correct?

    1. 1 and 2

    2. 2 and 3

    3. 1, 3 and 4

    4. 1 and 4

  23. Consider the following Reasons:

    1. Maintenance of clones

    2. Propagation of seedless plants

    3. Avoidance of long juvenile periods

    4. Economy and practicability

    Which of these ar the Reasons for using asexual propagation?

    1. 1 and 2

    2. 2 and 3

    3. 1, 2 and 3

    4. 1, 2, 3 and 4

  24. Which one of the following climatic regions is ideal for multistoried cropping?

    1. Norther subtropical region

    2. Souther subtropical region

    3. Tropical rain forest region

    4. Coastal region

  25. To avoid serious problems of diseases, rotation of crop is a must in the cultivation of

    1. root vegetables

    2. Solanaceous vegetables

    3. Cucurbitaceous vegetables

    4. Leguminous vegetables

  26. The riches source of Vitamin C is

    1. Grape

    2. Barbados cherry

    3. Citrus

    4. Apple

  27. Consider the following fruits:

    1. Aonla

    2. Pear

    3. Litchi

    4. Plum

    Which of these ar non-imacteric?

    1. 1, 2 and 3

    2. 1.2 and 4

    3. 1, 3 and 4

    4. 2, 3 and 4

  28. Match List I (Preserved product) with List II (Fruit) and select the correct answer:

    List-I List-II
    1. Marmalade

    2. Nectar

    3. Cordial

    4. Preserve

    1. Guava

    2. Aonla

    3. Lime

    4. Sweet orange

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 4
      • 3
      • 4
      • 1
      • 2
      • 3
      • 1
      • 4
      • 3
      • 2
      • 4
      • 1
      • 3
      • 2
  29. Consider the following statements: Blanching of fruits and vegetables before canning helps to

    1. Loosen the skin, which is particularly important in certain vegetables

    2. Drive out the air from the tissue to facilitate close filling

    3. Clean the fruit or vegetable to eliminate microorganisms4.

    4. Inactivate the enzymes to prevent the possibility of discoloration

    Which of these statements are correct?

    1. 1 and 2

    2. 1.3 and 4

    3. 2, 3 and 4

    4. 1, 2, 3 and 4

  30. Which one of the following diseases is caused by Exoperidium vexans?

    1. Pea rust

    2. Pink disease of rubber

    3. red rust of tea

    4. Blister blight of tea