Which of the following does a virus have in common with animal cells?
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(B)
DNA
2
Which of the following organelles are likely to be present in cells that are actively respiring and photosynthesizing?
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(B)
Mitochondria and chloroplast
3
One common characteristic of fungi, algae, mosses and ferns is that they
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(C)
produce spores that are dispersed
4
Protein-like bodies are borne on the part labelled
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(A)
II
5
The sexual reproductive function is performed by the part labelled
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(D)
V
6
Which of the following is transmitted through mosquito bite?
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(A)
Filariasis
7
Which of the following insects lays its eggs in horny, purse-like cases?
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(D)
Cockroach
8
Which of the following vertebrates does the skin function as a respiratory surface?
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(D)
Frog
9
Birds maintain their body temperature with the help of their
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(B)
feathers which cover the body
10
Secondary thickening in dicotyledonous stem is controlled by the
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(C)
cambium
11
2H2 → 2H2 + O2(g). The equation above represents a part of the light stage of photosynthesis. Which of the following must be presents for this reaction to occur?
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(C)
Light energy and cholorphyll
12
In an experiment to investigate the effect of nitrogen on the growth of plants, the substrate should be a medium of
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(C)
cow dung
13
Which vitamin plays an important role in blood clotting?
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(B)
Vitamin K
14
The mammalian organ which acts both as a digestive and as an endocrine organ is the
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(C)
pancreas
15
Which of following is NOT involved in the transport of substance in the body?
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(C)
Leucocytes
16
The end product of glycolysis in plants and animals is
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(A)
pyruvic acid
17
During respiration, air circulates round plant tissues via the
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(D)
intercellular spaces
18
The excretory structure in the earthworm is the
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(C)
nephridium
19
During the bending of the arm, the biceps muscles
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(A)
contracts and the triceps muscles relaxes
20
When a healthy shoot of a flowering plant is illuminated from one side, auxins, accumulate on the
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(A)
non-illuminated side of the shoot
21
The type of placentaion shown is
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(C)
parietal
22
An example of a plant having the placentation shown is
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(D)
pride of Barbados
23
The term caryopsis is used to describe a fruit in which the
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(C)
testa and pericarp are fused
24
The sex of a foetus is determined during
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(C)
fertilization
25
Biological growth refers strictly to an increase in the
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(A)
protoplasm of an organism
26
The process of walking is under the control of the part of the brain called
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(C)
cerebellum
27
The gland directly affecting metabolic rate, growth and development is known as
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(B)
thyroid gland
28
Which of the following ions is involved in the conduction of the nerve impulse?
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(B)
K+
29
The depth of illumination in a water body can be measured with a
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(B)
secchi disc
30
In a food chain involving a primary producer, a primary consumer as well as a secondary consumer, the sharing of trophic energy is in the form that the
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(D)
secondary consumer gets only a small portion of the energy contained in the primary producer
31
In spite of the removal of carbondioxide from the atmosphere, its amount remains more or less constant because
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(B)
it is produced during respiration of animals
32
In a tropical rain forest, non-epiphytic ferns and allies occur as
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(C)
shade-loving species
33
Colonization of a bare rock surface is termed
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(C)
primary succession
34
Which of the following is a measure for the control of bilharzia?
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(B)
Application of molluscicides in water bodies
35
Some of the diseases caused by bacteria are
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(A)
tuberculosis, gonorrhoea and syphilis
36
Environmental pollutants which can work through the media of water, soil and air include
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(C)
sulphur(IV)oxide
37
Human height is an example of a feature which depends on both
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(B)
genetic and environmental factors
38
A person with type O blood can donate to a patient with type A because the donor's blood
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(A)
lacks antigens
39
The DNA molecule is a chain of repeating
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(D)
nucleotides
40
The specific number of chromosomes in each somatic cell is represented by
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(C)
2N
41
A man with blood group a is married to a woman with blood group A. Which of the following group combinations is possible if the family has three children?
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(D)
A, O, A
42
The F1 of a cross between a tall and a dwarf plant was tall. The F1 was advanced to F2. How many of 120F2 plants will be dwarf?
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(A)
30
43
All the sons of a colour-blind woman will be coloured blind regardless of the state of the father because
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(D)
sex-linked traits express dominance in females
44
The slender, long and slightly curved beak of the sun-bird is an adaptation for breeding for feeding on
