50. A layer which helps in the opening
of anther
a)
Tapetum
b)middle
layer
c)epidermal
cell
d) endothecium
Ans: d)
endothecium
51. The following one sclereid s is
found in the seed coats of Pisum sativum
a)Astrosclerids
b)
Brachysclerids
c)
Osteosclereids
d)trichosclereids
Ans: c) Osteosclereids
52. Secondary cortex is
a)
Phellogen
b)
Phellum
c)
phelloderm
d)
complementary cells
Ans: c)
phelloderm
53. The pollen tubes enters through
the nucellus by a process
a)
porogamy
b)
chalazogamy
c)
mesogamy
d)orthrogamy
Ans: c) mesogamy
Microtechnique
54. DPX stands for
a)
Dilute Primary xylol
b)
Distrene Prime Xylene
c)
Destrine Plasticiser Xylene
d)
Dilute Plastic xylol
Ans: c) Destrine Plasticiser Xylene
55. Haematoxylin belongs to which
category?
a)
Acidic stains
b)
Neutral stains
c)
Basic stains
d)
All of these
Ans: c) Basic stains