10 MCQ on Plant Science for various Agriculture Exams✅ Part -83

85. In angiosperms, first nuclear division occurs during
    (a) Embryo formation
    (b) Endosperm formation
    (c) Zygote formation
    (d) Gamete formation

86. Micropyle in seed helps the entry of
    (a) Pollen tube
    (b) Enzyme
    (c) Water
    (d) None of these

87. In albuminous seeds, the food is stored in
    (a) Plumule
    (b) Endosperm
    (c) Cotyledon
    (d) Testa

88. Mature embryo sac has
    (a) Five cells
    (b) Seven cells
    (c) Eight cells
    (d) Six cells

89. Ploidy of pollen grain of Cyperus is
    (a) 2n
    (b) 3n
    (c) n
    (d) 4n

90. The female gametophyte of typical dicot embryo sac is
    (a) 7-celled
    (b) 8-celled
    (c) 6-celled
    (d) 9-celled

91. Endosperm is the endosperm tissue of angiosperm
    (a) Triploid 3n
    (b) Diploid 2n
    (c) Haploid n
    (d) Tetraploid 4n

92. Which of the following is propagated by means of cuttings?
    (a) Citrus
    (b) Bougainvillea
    (c) Banana
    (d) All of these

93. Caruncle is derived from
    (a) Cotyledon
    (b) Integument
    (c) Endosperm
    (d) Embryo

94. Seedless fruits are of no use in
    (a) Grapes
    (b) Banana
    (c) Tomato
    (d) Coconut

95. At what stage of endosperm development the endosperm becomes nuclear or cellular in angiosperms?
    (a) When division is faster than embryo formation
    (b) Just after fertilization of primary endosperm nucleus
    (c) When divisions are slower than embryo formation
    (d) Endosperm formation

96. In the mature stage of endosperm, maize grain is made up of
    (a) Cellulose and protein
    (b) Lignin and protein
    (c) Protein and gluten
    (d) Globulin and albumin

97. Synergids are
    (a) Haploid
    (b) Triploid
    (c) Diploid
    (d) Tetraploid

98. The endosperm of Brassica campestris is
    (a) Haploid
    (b) Diploid
    (c) Triploid
    (d) Tetraploid

99. The ovule in Pisum sativum is
    (a) Orthotropous
    (b) Hemianatropous
    (c) Anatropous
    (d) Amphitropous

100. Which part of the reproductive structure of plant secretes enzymes and hormones?
     (a) Archesporium
     (b) Middle layer
     (c) Tapetum
     (d) Endothecium

101. Heterostyly development refers to
     (a) Vegetative growth and flowering in different seasons
     (b) Different organ in which physiological changes take place
     (c) Male and female sex organs on the same plant
     (d) Two types of sporocytes in the same plant