The endoplasmic reticulum is represented by the part labelled
Responder
(D)
IV
2
The part labelled II is responsible for
Responder
(B)
respiration
3
The rods in the retina of the eyes are examples of
Responder
(A)
cells
4
The absence of special food and water-conducting systems restricts the body size in
Responder
(A)
algae, liverworts and mosses
5
A plant-like feature in Euglena is the
Responder
(B)
pigment spot
6
The most common characteristic of the fungal hyphae is the possession of
Responder
(D)
cell-like partitions formed by cross-walls
7
Insects are considered the most successful among the invertebrates because they?
Responder
(B)
survive in various environmental conditions
8
the larval stage of a mosquito is called
Responder
(A)
wriggler
9
the function of the long-winged reproductives of the termites colony is to
Responder
(A)
disperse the population
10
A peculiar characteristics of mammals is that they
Responder
(D)
have sabaceous glands
11
In the internal structure of plants, a wide pith in the centre is common to
Responder
(B)
dicot stem and monocot roots
12
The gall bladder of mammal has a duct connected to the
Responder
(A)
liver
13
All living cells require water because it
Responder
(A)
is a medium for all metabolic reactions
14
The breakdown of fats and oils into simpler absorbable compounds is catalyzed by the group of enzymes called
Responder
(A)
lipases
15
Yam is used in this set-up because it
Responder
(D)
acts as a semi-permeable membrane
16
Which of the following results is to be expected if the set up is left for several hours?
Responder
(C)
decrease in the volume of water inside the yam
17
The surface of an alveolus in a mammal is well supplied with tiny blood vessels known as
Responder
(D)
capillaries
18
The anaerobic fermentation of a glucose molecule yields
Responder
(B)
2 ATP molecules and alcohol
19
The opening of the stoma is controlled by the
Responder
(B)
increase in solute concentration in the guard cells
20
The sweat gland is the structure labelled
Responder
(D)
IV
21
The function of the part labelled III is to
Responder
(A)
contract to pull the hair erect
22
The type of reproduction that is common to both Hydra and yeast
Responder
(D)
budding
23
The eggs of birds contains relatively larger quantities of yolk than those of amphibians and reptiles because
Responder
(B)
embryonic development is longer in birds
24
Epigeal germination of a seed is characterized by
Responder
(A)
more rapid elongation of the hypocotyl than the epicotyl
25
Nervous control differs from hormonal control in that the former
Responder
(C)
produces short-term changes
26
If a nursing mother is not producing enough milk, her hormonal system is probably deficient in
Responder
(A)
prolactin
27
The two keys cation involved in the action potential of nervous transmissions are
Responder
(C)
Na+ and K+
28
A caterpillar and an aphid living in different parts of the same plant can be said to
Responder
(C)
occupy different ecological niche
29
Ecological Zone
Temperature (ºC)
Rainfall (mm)
I
45
300
II
32
2000
III
30
2200
IV
15
800
From the table above high relative humidity will be expected in zones
Responder
(C)
II and III
30
Ecological Zone
Temperature (oC)
Rainfall (mm)
I
45
300
II
32
2000
III
30
2200
IV
15
800
From the table above which of the zones is likely to be desert?
Responder
(A)
I
31
The association between termites and the cellulose - digesting protozoans in their guts is an example of
Responder
(B)
mutualism
32
The progressive loss of energy at each level in a food chain leads to
Responder
(B)
a decrease in biomass at each successive level
33
One of the adaptation of reptile to water loss is the presences of
Responder
(A)
keratinous scale
34
A state in Nigeria that is most susceptible to desert encroachment is
Responder
(D)
Katsina
35
The scarcity of food causes a sudden decrease in population size by
Responder
(C)
raising the mortalility rate
36
The soil type that will be most difficult to plough in a wet season is one that is
Responder
(B)
clayey
37
A farm practice that result in the loss of soil fertility is
Responder
(D)
continous cropping
38
Paternity dispute can most accurately be resolved through the use of
Responder
(C)
DNA analysis
39
In a Mendelian cross of red and white varieties of the four O"clock plants, the F1 generation expresses incomplete dominance by having flower which are
Responder
(C)
pink
40
Identical twins inherit their genes from
Responder
(B)
the same egg and sperm
41
Sex - linked genes are located on
Responder
(D)
X - chromosome
42
Which of the following is an example of intraspecific competition?
Responder
(B)
a worker termite and a soldier in a limited space.
43
Plants survive hot dry conditions by
Responder
(A)
storing water in large parenchyma cells
44
Rodents gnaw on food with their
Responder
(D)
chisel - like front teeth
45
The spots and stripes of the leopard and tiger are example of
