Which of these animals is NOT metamerically segmented?
إجابة
(E)
Shark
4
Some of the major elements required by plants are
إجابة
(A)
Potassium, nitrogen, phosphorus, sodium, calcium
5
In human reproduction, the zygote formed as a result of fertilization gets attached to the wall of the uterus. The process is called
إجابة
(D)
Implantation
6
Kwashiorkor is caused by severe deficiency of
إجابة
(D)
Proteins
7
An hormoiothermic animal kept in a room where the temperature is lower than the body temperature may lose heat by four physical process. Which of the following processes is NOT connected with the body temperature regulation ?
إجابة
(E)
Convection
8
Which of these food chains is NOT possible in a forest?
إجابة
(A)
Diatom → fly → toad → snake
9
If a tall man (TT) marries a dwarf woman (gg) and they have four male children, the offspring will be?
إجابة
(E)
All tall
10
A married couple has 10 children and they are all girls. Which of the following is the CORRECT explanation?
إجابة
(E)
The X component of the man’s sex chromosomes was always involved
11
If a 26 year old blind man married a young one-eyed woman and they had four children, how many of them would be blind like their father?
إجابة
(E)
none
12
The glottis is the opening which leads to the
إجابة
(B)
Larynx
13
A tapeworm has no alimentary canal because
إجابة
(D)
Its body absorbs digested food
14
A grass hopper respires by the means of its
إجابة
(E)
Tracheal tubes
15
An onion bulb stores its food in the
إجابة
(B)
Leaves
16
Roots of plants are normally
إجابة
(D)
Positively hydrotropic
17
The main function of the swim-bladder is for
إجابة
(C)
Buoyancy
18
Which of the following pairs are the products of sucrose hydrolysis?
إجابة
(C)
Glucose + fructose
19
Which of the vertebra has a projection called odontoid process?
إجابة
(B)
Axis
20
Refrigeration, as a method of preservation, has ONE of the following characteristics:
إجابة
(C)
Makes the bacteria inactive
21
Treatment of a poor soil with lime supplies
إجابة
(B)
Calcium
22
In the enzyme (amlyase) reactions of starch → sugar
starch is referred to as the
إجابة
(A)
substrate
23
ONE of the major causes of haemophilia is lack of
إجابة
(A)
firbrinogen
24
In man, identical twins occur when
إجابة
(A)
An ovum is fertilized by a sperm and then divide into two, each forming a separate embryo
25
The parts of the mammalian eye that strongly bend light rays are the
إجابة
(A)
cornea and the lens
26
Which of these statements is NOT true of insects?
إجابة
(C)
Their thorax comprises three segments, only two of which bear a pair of appendages each
27
when an operculate fish breathes it takes in water through the
إجابة
(B)
mouth and passes it out through the operculum
28
Which of the following tissue are made up of dead cells?
إجابة
(B)
Xylem vessels
29
External ears of mammals consist of
إجابة
(D)
auditory meatus and pinna
30
Any dry fruit which can break into several parts each containing one seed is a
إجابة
(D)
schizocarp
31
Which of the following is NOT a function of mammalian blood?
إجابة
(B)
Production of hormones
32
The maize grain is regarded as a fruit and not a seed because
إجابة
(D)
there is the remain of a style
33
Which of these parts of the mammalian ears is directly concerned with the sense of balance?
إجابة
(E)
Semicircular canals
34
When freshly tapped palm wine was kept overnight it was found to be more alcoholic. This effect must have been due to
إجابة
(E)
anaerobic respiration of an organism
35
If a farmer left his land uncultivated for five years before returning to it, he must be practising
إجابة
(E)
the bush fallow system
36
A pyramid of numbers can be defined as
إجابة
(C)
the numerical relationships of a food chain
37
In man, spermatozoa are never found in the?
إجابة
(D)
prostrate glands
38
Which of the following statements is TRUE of inhalation of air by man?
إجابة
(E)
Size of thoracic cavity increase
39
If the gall bladder of a man is removed by surgery, which of the following processes will be most seriously affected?
إجابة
(A)
Digestion of fats and oil
40
Flatworms and roundworms are said to be invertebrates because
إجابة
(D)
they have no backbones
41
Where is the energy produced in a cell?
إجابة
(E)
Mitochondria
42
In which part of a leguminous plant can you find bacteria like Azotobacter?
إجابة
(D)
In nodules
43
The three blood vessels that supply the mammalian alimentary canals are
إجابة
(B)
coeliac artery, anterior mesenteric artery and posteroir mesenteric artery
44
In an epigeal germination, it is the
إجابة
(B)
hypocotyl that elongates fast
45
The mammalian pancreas is involved with the?
إجابة
(D)
digestion of food, production of hormone and the regulation of blood sugar
