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