In terms of the number of individuals, which of the following taxa is most inclusive?
Respondre
(C)
class
2
A characteristic that can possibly be shared by both living and non living organisms is
Respondre
(D)
increase in size
3
The cell of an onion bulb can be differentiated from a cheek cell by the presence of
Respondre
(C)
cell wall
4
In plants, the structure that performs a similar function with the testis in mammals is the
Respondre
(C)
anther
5
The bacteria type that are arranged in chains are the
Respondre
(C)
streptococci
6
The most abundant group of organisms in the animal kingdom is
Respondre
(D)
insecta
7
Radial symmetry is a feature common to
Respondre
(C)
coelenterates
8
Which of the following is used mainly for balancing in fish?
Respondre
(D)
the dorsal fin
9
The beak of a duck is structurally adapted for
Respondre
(A)
scooping and sieving food
10
The most important characteristic that makes reptiles to conquer terrestrial habitats is the possession of
Respondre
(D)
amniotic egg
11
In a dicotyledonous stem, the zone between the epidermis and the pericycle is the
Respondre
(A)
cortex
12
The order of passage of food in the digestive system is?
Respondre
(A)
ileum → caecum → large intestine → rectum
13
insectivorous plants traps and kill their prey to derive
Respondre
(C)
nitrogen
14
In the alimentary system of a bird, the function of teeth is carried out by the
Respondre
(C)
gizzard
15
What will happen when two equal-sized pieces of unripe pawpaw labeled X and Y are dropped into equal volumes of concentrated salt solution and distilled water respectively?
Respondre
(C)
pawpaw Y will become turgid
16
Exhaled air differs from inhaled air in that it
Respondre
(D)
usually has more water vapour
17
In the mammalian kidney, the Bowman''s capsules is located in the
Respondre
(C)
cortex
18
A plant parenchyma cell also acts as a supporting tissue when it
Respondre
(C)
becomes turgid
19
During ovulation, an egg is released from the
Respondre
(C)
graafian follicle
20
The transmission of impulses along a nerve fibre is characterized by
Respondre
(B)
electrical and ionic changes
21
The major consequences of bush burning in an ecosystem is
Respondre
(B)
the loss of biological diversity
22
Which of the following associations is an example of mutualism
Respondre
(A)
hydra viridis and zoochlorellae
23
In a typical freshwater habitat, the edge of the stream or pond constitutes the
Respondre
(C)
littoral zone
24
The main ecological problem facing intertidal organisms is
Respondre
(A)
desiccation
25
Stomata of some plants are sunken and protected by hairs. These are features of
Respondre
(D)
xerophytes
26
An ecological factor that will have the most limiting effects on the abundance of phytoplankton in a turbid pond is
Respondre
(C)
light
27
In an experiment to determine the percentage of air in a soil sample, the following readings were recorded:
volume of water in measuring cylinder = 500 cm3
volume of soil added to water = 350 cm3
volume of water and soil after stirring = 800 cm3
the percentage of air in the soil sample is
Respondre
(C)
14.28%
28
A boy who is fond of swimming in a pond finds himself passing urine with traces of blood. He is likely to have contacted
Respondre
(A)
schistosomiasis
29
The easiest way to establish the level of pollution in a local stream is to measure the level of
Respondre
(A)
oxygen
30
The Rhesus factor of blood was first identified in a category of
Respondre
(A)
monkeys
31
Genetically modified food products have not become universally accepted because
Respondre
(C)
their effects on human consumers is not yet fully understood
32
A major adaptive feature of endoparasites is the
Respondre
(A)
loss of the organ of movement
33
The ability of a chameleon to change its colour is an adaptive feature for
Respondre
(B)
defence
34
Which of the following is the most advanced evolutionary development in plants?
Respondre
(B)
development of flowers
35
Which of the following is a major cause of variation among organisms?
Respondre
(C)
Sexual reproduction
36
Use the diagram above to answer this question. Which of the organisms is characterised by the possession of a chitinous exoskeleton?
Respondre
(A)
l
37
Use the diagram above to answer this question.The type of reproduction illustrated in IV is
Respondre
(D)
budding
38
Use the diagram above to answer this question.The vessel that carries blood from l to ll is the
Respondre
(A)
pulmonary artery
39
Use the diagram above to answer this question.Water reabsorption takes place in
Respondre
(B)
lll and lV
40
Use the diagram above to answer this question. From the graph above, it can be appropriately deduced that?
Respondre
(B)
the body temperature in l is independent of external temperature
41
Use the diagram above to answer this question. The animal represented by l is a
Respondre
(B)
homoiotherm
42
In the diagram, the illustration is a typical example of a plant pollinated by
Respondre
(A)
wind
43
In the diagram, the part labelled I represents the
Respondre
(B)
lag phase
44
In the diagram, the part labelled IV indicated that the yeast population has
Respondre
(A)
reached its maximum size
45
In the diagram, if species i, ii and iii interact in a community, which of the following statement is true?
