71. Which one of the following is the example of mitosis ?
A. Megasporongensis
B. Microsporogensis
C. Pollen formation
D. Division of generative cell
Answer : Option B
72. Typical anther normally consists of
A. One lobe Four sporangia
B. Two lobe Two sporangia
C. Two lobe Four sporangia
D. One lobe Two sporangia
Answer : Option B
73. During the development of monosporic development of embryo sac the nucleus of the functional megaspore divides
74. Cross pollination has an advantage of
A. Mutation
B. polyploidy formation
C. Genetic recombination
D. Crossing over
Answer : Option C
75. Unisexual flowers prevent
76. The function of the filiform apparatus is
A. To nourish the pollen grain
B. To guide the entry of pollen tube
C. To develop pollen tube
D. To carry pollen tube through style
Answer : Option B
77. Which one of the following is an example of free-nuclear endosperm
78. The protective cover of the radicle in maize seed is called
79. In angiosperm the endosperm is formed
A. In the nucellus
B. In the embryo sac
C. In the seed
D. n the anther
Answer : Option B
80. Stamen show homology with