61. Tapetum provides
A. protection to embryo
B. Nourishment to pollen grains
C. Nourishment to embryo
D. Protection to endosperm
Answer : Option B
62. In triple fusion, how many male gamete participate ?
63. Germpores are actually
A. Apertures in intine
B. Thick area in intine
C. Apertures in exine
D. Thin area in intine
Answer : Option C
64. Radicle tip is derived from
65. How many haploid nuclei are involved in double fertilization ?
66. Endothecium in anther helps in
A. Dehiscence of anther
B. Nutrition to pollen
C. Germination of pollen
D. Formation of male gamete
Answer : Option A
67. The intine of a pollen grain is made up of
A. Lignin and suberin
B. Pectin and cellulose
C. Lignin and Hemicellulose
D. Pectin and callose
Answer : Option B
68. Which is the most resistant natural organic material ?
69. Style is
A. a is delicate hollow tube
B. a tough hollow tube
C. a delicate filament
D. called pollen tube
Answer : Option C
70. Nucellus is mass of
A. Parenchymatous tisse
B. Sclerenchymatous tissue
C. Meristematic tissue
D. Collenchymatous tissue
Answer : Option A