Which of the following is the youngest plant tissue
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(A)
Meristem
4
Viruses differ from all forms of life because they
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(D)
require other living cells to multiply
5
The endoplast cells found in hydra are used for
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(A)
reproduction
6
Annelides differ from nematodas in that they
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(C)
are metamerically segmented
7
Which of the following performs similar functions?
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(C)
sorus and indusium
8
In ferns, the sporophyte
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(B)
reproduce asexually to produce spores
9
The group of insects that undergoes complete metamorphosis is
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(C)
houseflies, beetles and butterflies
10
The nitrogenous substance that is excreted by birds in order to conserve water is
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(C)
uric acid
11
In mammals, the exchange of nutrients and metabolic products occurs in the
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(A)
lymph
12
the part of the stomach nearer the gullet is called th
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(B)
cardiac spincter
13
Trace elements are required by plants mainly for the
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(A)
formation of pigments and enzymes
14
The part that is similar to the bone is labelled
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(C)
II
15
The part labelled I and II constitute the
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(A)
Crown
16
A food substance was treated with a few drops of Sudan III solution and a red coloration was obtained. The food contained
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(C)
fat
17
Oozing out of water from the leaves of plants in a humid environment is known as
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(D)
guttation
18
The element that is essential for the coagulation of blood is
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(B)
calcium
19
Anaerobic respiration differs from aerobic respiration by the production of
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(C)
less amount of energy and alcohol
20
Stomatal pores open when there is
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(D)
an increase in the sugar content of mesophyll cells
21
The process of deamination is essential for the
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(C)
formation of urea
22
A band of connective tissue linking two bones in a joint is known as
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(D)
ligament
23
The appendicular skeleton is composed of the pectoral girdle
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(A)
pelvic girdle, fore and hind limbs
24
The companion cells are part of the
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(B)
phloem
25
In which of the following groups of vertebrates would the largest amount of yolk be found in the egg?
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(D)
Reptiles
26
The function of the part labelled V is for the passage of
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(A)
pollen tube and pollen nucleus
27
The female gamete is represented by
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(C)
III
28
The type of vegetative reproduction illustrated in the diagram above is
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(B)
adventitious bud
29
coconut and oil palm fruits can be grouped as
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(D)
drupe
30
The substance that is responsible for optical dominance in plants is known as
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(C)
auxin
31
The part of the brain that regulates most biological cycles in humans is
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(D)
pineal body
32
The ability of the eye to focus on both near and distant objects is termed
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(D)
Accomodation
33
The speed of wind can be measured with an instrument called
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(C)
anemometer
34
Which organism in the food-web illustrated above is an omnivore?
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(B)
Rat
35
Toads and lizards in an ecosystem depend on a limited quantity of food. This is an example of
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(D)
interspecific competition
36
Adaptive features of plants to desert conditions include?
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(A)
thick barks, succulent stems and sunken stomata
37
The Southern Guinea Savanna differs from the Northern Guinea Savanna in that it has
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(C)
more rainfall and taller grasses
38
After a heavy rainfall and the formation of a large pond, the most likely sequence of changes in the vegetation of the pond is
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(C)
Spirogyra → Euglena → grass → water lily
39
In a soil sample, the relative amouunts of the different soil particles can best be determined by the process of
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(D)
sedimentation
40
Which is the most important pollutant of the marine environment in Nigeria?
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(C)
Oil
41
One of the most effective ways of controlling guinea worm is by
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(D)
provision of portable drinking water
42
During binary fission in lower organisms, the nucleus is known to undergo
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(A)
mitosis
43
One reason for the success of Mendel's work is that he
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(B)
introduced quantitative and qualitative elements into his work
44
The homozygous condition HbsHbsresults in sickle cell anaemia whereas HbAHbs has the sickling trait. What is the probability that a couple with the sickling trait will give birth to one normal child?
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(B)
1/4
45
Which of the following characters is NOT sex-linked?
