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141
Which of the following organisms reduces nitrates in the soil to gaseous nitrogen?
A.
Euglena
B.
Protozoan
C.
Denitrifying bacterium
D.
Parasitic mould
E.
Nitrifying bacterium
View Answer & Discuss (1)
WAEC 1993
142
The process whereby microorganisms can convert atmospheric nitrogen into nitrogenous compound is
known as
A.
nitrogen cycle
B.
nitrogen fixation
C.
denitrification
D.
putrefaction
E.
decomposition
View Answer & Discuss
WAEC 1993
143
What is the function of the part labelled ll?
A.
Attraction of insects
B.
Secretion of nectar
C.
Protection of the stigma
D.
Formation of fruit wall
E.
Attachment of flower to the shoot.
View Answer & Discuss
WAEC 1993
144
The function of the part labelled l is to
A.
receive pollen grains
B.
produce nectar
C.
store the pollen grains
D.
store the ovules
E.
produce the male gametes
View Answer & Discuss (4)
WAEC 1993
145
How would you describe the position of the ovary in relation to the
receptacle?
A.
Superior
B.
lnferior
C.
Semi-inferior
D.
Gamosepalous
E.
Polysepalous
View Answer & Discuss (9)
WAEC 1993
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