1993 - WAEC Biology Past Questions and Answers - page 3
21
Which of the following is not a courtship behaviour exhibited of animals?
A
Pairing
B
Display
C
Seasonal migration
D
Hibernation
Ask EduPadi AI...
22
Which of the following mineral salts is a trace element?
A
Zinc
B
CArbon
C
Hydrogen
D
Potassium
Ask EduPadi AI...
23
Which of the following organisms reduces nitrates in the soil to gaseous nitrogen?
A
Euglena
B
Protozoan
C
Denitrifying bacterium
D
Parasitic mould
Ask EduPadi AI...
24
The process whereby microorganisms can convert atmospheric nitrogen into nitrogenous compound is
known as
A
nitrogen cycle
B
nitrogen fixation
C
denitrification
D
putrefaction
Ask EduPadi AI...
25
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
Ask EduPadi AI...
26
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
Ask EduPadi AI...
27
How would you describe the position of the ovary in relation to the
receptacle?
A
Superior
B
lnferior
C
Semi-inferior
D
Gamosepalous
Ask EduPadi AI...
28
The parts labelled IV, V and VI respectively are the
A
ciliary body, optic nerve and yellow spot
B
. blind spot, optic nerve and suspensory ligament
C
vitreous humour, yellow spot and optic nerve
D
blind spot, optic nerve and pupil
Ask EduPadi AI...
29
The light ray entering the eye goes through the following route
A
II, III, I, IV, V
B
II, I, VII, III
C
II, I, III, IV
D
V, VI, III, I
Ask EduPadi AI...
30
Which of the following structures are adjusted in focusing the image of a
distant or near object on the retina?
A
I and II
B
II and III
C
III and VII
D
IV and V
Ask EduPadi AI...