10 MCQ on Plant Science for various Agriculture Exams✅ Part -70

75. Pollination by snail and slug is known as
    (a) Anemophilous
    (b) Chiropterophilous
    (c) Entomophilous
    (d) Malacophilous

76. Double fertilization in angiosperms was discovered by
    (a) Strasburger
    (b) J. C. Bose
    (c) Maheshwari
    (d) Nawaschin

77. In an young anther the four rows of cells, which later produce pollen, are called
    (a) Antheridium
    (b) Archesporium
    (c) Tapetum
    (d) Zoosporangium

78. Which one of the following events in a botanical garden is never directly influenced by light
    (a) Flowering
    (b) Photosynthesis
    (c) Transpiration
    (d) Fertilization

79. A monocarpic plant is one which
    (a) Has only one carpel
    (b) Flowers and fruits only once in lifetime thereafter dies
    (c) Produces only one seed
    (d) None of the above

80. Maturation of male and female sex organs at different times is known as
    (a) Herkogamy
    (b) Dichogamy
    (c) Polygamy
    (d) Apogamy

81. Development of egg without fertilization
    (a) Parthenocarpy
    (b) Polyembryony
    (c) Parthenogenesis
    (d) Adventive embryony

82. In monocots, grafting is almost impossible because they lack
    (a) Cambium
    (b) Ground tissue
    (c) Vascular bundle
    (d) Parenchymatous cells

83. Embryo sac is also known as
    (a) Microgametophyte
    (b) Megagametophyte
    (c) Microsporangium
    (d) Megasporangium

84. The root cell of wheat plant has 42 chromosomes. What would be the number of chromosomes in the synergid cell?
    (a) 7
    (b) 14
    (c) 21
    (d) 28

85. Anemophilous flowers have
    (a) Sessile stigma
    (b) Small smooth stigma
    (c) Coloured flower
    (d) Large feathery stigma

86. 8-nucleate embryo sacs are
    (a) Monosporic only
    (b) Bisporic only
    (c) Tetrasporic only
    (d) Any of these

87. Ornithophily is pollination by
    (a) Birds
    (b) Insects
    (c) Wind
    (d) Water

88. In flowering plants, a mature male gametophyte is derived from a ‘pollen mother cell’ by
    (a) Three mitotic divisions
    (b) One meiotic, two mitotic divisions
    (c) Two meiotic divisions
    (d) A single meiotic division

89. When vegetative cells of zygote form embryo, it is called
    (a) Apospory
    (b) Apomixis
    (c) Diploid polyembryony
    (d) Adventive polyembryony

90. Fragrant flowers with well-developed nectaries are adapted for
    (a) Anemophily
    (b) Hydrophily
    (c) Entomophily
    (d) Zoophily