The organelle common to both plant and animal cells is the
Risposta
(A)
centrioles
2
Which of the following is likely to have a higher concentration of the mitochondria?
Risposta
(A)
Sperm cell
3
The hyphal wall of fungi is rigid owing to the
Risposta
(D)
chitin
4
Angiosperms and gymnosperms belong to the class
Risposta
(B)
spermatophyta
5
An example of radially symmetric organism is
Risposta
(B)
Hydra
6
The leech and the earthworm belong to the
Risposta
(D)
annelids
7
I. Rattus rattus II. Agama agama III. Bufo regularis IV. tilipia zilli
the order of evolutionary advancement to the above vertebrates is
Risposta
(D)
IV, III, II, I
8
From the diagram above the angle between the parts labelled II and III is the
Risposta
(D)
axil
9
The part of the plant where photosynthesis is least likely to take place is
Risposta
(D)
IV
10
The stage in the life history of a moth responsible for the destruction of agricultural crops is the
Risposta
(D)
caterpillar
11
The blackfly is a vector of
Risposta
(C)
onchocerciasis
12
The transition from amphibians to mammals involves the limb becoming arranged to support the weight more effectively requiring modifications in the
Risposta
(B)
pectoral and pelvic girdles
13
The main function of the caudal fin in Tilapia is to
Risposta
(A)
propel it forward in water
14
In the root vascular system, the stele is directly surrounded by the
Risposta
(C)
endodermis
15
From the diagram above the part labelled IV represents the
Risposta
(D)
duodenum
16
From the diagram above, The bile is stored in the part labelled
Risposta
(B)
II
17
The only vein that carriers pure oxygenated blood is the
Risposta
(B)
pulmonary vein
18
The function of the fluid - filled pericadium is to
Risposta
(A)
reduce the friction caused by the pumping movements of the heart
19
The mammalian lung is made air tight by the
Risposta
(C)
pleural membrane
20
A test tube containing yeast in glucose solution containing alkaline pyrogallol. The bubbles of carbon (IV) oxide produced indicates that the yeast cells are
Risposta
(A)
respiring in the absence of oxygen
21
The urinary tubules of the kidney function through
Risposta
(C)
ultrafiltration and selective reabsorption
22
Excess water in plants is excreted as water vapour and droplets respectively through
Risposta
(B)
transpiration and guttation
23
When bacteria swim from cold to warm regions this is known as
Risposta
(B)
positive thermotaxis
24
Hydrostatic skeleton is the type of supporting system found in
Risposta
(C)
oligochaetes
25
From the diagram above the structure labelled I originates from the
Risposta
(B)
kidney
26
From the diagram above Birth control by vasectomy is achieved by severing the structure labelled
Risposta
(C)
III
27
The main function of the structure labelled I is to
Risposta
(A)
store food for the young plant
28
The type of germination illustrated is termed
Risposta
(C)
epigeal
29
From the diagram above the structure labelled I is the
Risposta
(D)
stapes
30
A function of the part labelled II is to
Risposta
(A)
equalize pressure on both sides of the tympanum
31
Which of the following is a homostatic response in humans?
Risposta
(D)
shivering in a cold environment
32
From the diagram above the optimal temperature for breeding cockroaches is
Risposta
(C)
24oC
33
At which temperature will cockroaches not survive after 10 days
Risposta
(A)
15oC
34
Evaporation and transpiration are respectively represented by the components labelled
Risposta
(A)
I and II
35
The main reservoir of water in the circle is the
Risposta
(D)
ocean
36
The Mambila plateau is a unique Nigerian biome located in
Risposta
(C)
Taraba state
37
In Nigeria, the guinea savanna belt borders the
Risposta
(B)
rainforests and the sudan savanna
38
The population density of Tridex in an abandoned square farm land of side 200 m was found to be 5 plants per m\(^2\). The population size of the plant on the farm is
Risposta
(D)
200000
39
Secondary succession is much faster than primary succession because
Risposta
(B)
soil is already present
40
which of the following is used to test for the presence of lime in a soil sample?
Risposta
(C)
HCl(aq)
41
The importance of practising crop rotation in agriculture is to
Risposta
(A)
maintain soil fertility
42
The recycling method of solid waste disposal is unsuitable for
Risposta
(A)
organic matter
43
A non - renewable alternative source of energy is
Risposta
(C)
nuclear energy
44
Which of the following is the best explanation for a child who is phenotypically short and born of two tall parents
Risposta
(D)
Both parents possess gene for shortness
45
A yellow maize is crossed with a white maize and the first filial generation produce yellow maize only. The white trait is said to exhibit
