10 MCQ on Plant Science for various Agriculture Exams✅ Part -67

42. The movement of pollen tube towards embryo sac is
    (a) Thigmotactic
    (b) Thermotactic
    (c) Chemotactic
    (d) Phototactic

43. The number of meiotic divisions required to produce 400 seeds in a pea plant is
    (a) 400
    (b) 500
    (c) 600
    (d) 800

44. Hypanthodium refers to a special type of
    (a) Fruit
    (b) Flower
    (c) Inflorescence
    (d) Ovary

45. When pollen of a flower is transferred to the stigma of another flower of the same plant, the pollination is
    (a) Xenogamy
    (b) Geitonogamy
    (c) Autogamy
    (d) Allogamy

46. A bisexual flower which never opens up in its life span is known as
    (a) Autogamy
    (b) Allogamy
    (c) Homogamy
    (d) Cleistogamy

47. The chief pollinating agents of our agri-horticulture crops are
    (a) Bees
    (b) Moths
    (c) Beetles
    (d) Butterflies

48. Fertilization in which male gametes are carried through pollen tube is known as
    (a) Porogamy
    (b) Syngamy
    (c) Siphonogamy
    (d) Chalazogamy

49. Axillary buds are used to raise crop of
    (a) Wheat
    (b) Rice
    (c) Groundnut
    (d) Sugarcane

50. Cauliflory is flowers produced
    (a) On old dormant bud
    (b) On young bud
    (c) On the axil
    (d) On the branch

51. Anthesis is
    (a) Opening of flower bud
    (b) Pollen mother cell undergoes meiosis
    (c) Dehiscence of anthers
    (d) Stigma becoming receptive

52. Ubisch bodies found in tapetal cells help in formation of
    (a) Pollenkit and pollinia
    (b) Exine
    (c) Sporopollenin
    (d) Intine and pollenkit

53. Germ pore is the region where the exine is
    (a) Thin
    (b) Uniform
    (c) Thick and uniform
    (d) Absent

54. Which of the following has filiform apparatus?
    (a) Anther wall
    (b) Pollen grains
    (c) Synergids
    (d) Spores

55. Cleistogamous condition is present in
    (a) Brassica
    (b) Solanum tuberosum
    (c) Commelina
    (d) Allium cepa

56. Which of the following regenerates with the help of layering?
    (a) Cactus
    (b) Rose
    (c) Mango
    (d) Jasmine

57. Male gametes are formed from
    (a) Generative cell
    (b) Tube cell
    (c) Body cell
    (d) Prothallial cell

58. Stalk of ovule is called
    (a) Funicle
    (b) Caruncle
    (c) Nucellus
    (d) Pedicel

59. The point where funicle joins with ovule is known as
    (a) Chalaza
    (b) Micropyle
    (c) Hilum
    (d) Integument

60. Fusion of two dissimilar gametes is known as
    (a) Fertilization
    (b) Autogamy
    (c) Allogamy
    (d) Dichogamy