What is the level of organization of an onion bulb?
Απάντηση
(B)
organ
2
A characteristic exhibited by all living organism is?
Απάντηση
(D)
the ability to remove unwanted substances
3
In a cell, the genes are carried by?
Απάντηση
(B)
chromatin threads
4
Alternation of asexual and sexual modes of reproduction is found in?
Απάντηση
(C)
fern
5
The first terrestrial vertebrates evolved from
Απάντηση
(A)
pisces
6
In plants, the structures that play roles similar to the arteries and veins of animals are the
Απάντηση
(A)
xylem and phloem
7
A blue-green algae is not a protophyte because?
Απάντηση
(B)
its cells are prokaryotic
8
The feature that makes locomotion in water easy for fish is the?
Απάντηση
(C)
streamlined body
9
Bird toes suitable for digging have claws that are?
Απάντηση
(A)
blunt
10
Which of the following is an example of carnivorous plant?
Απάντηση
(B)
bladderwort
11
The part of alimentary system of a bird where food is ground into small particles is the?
Απάντηση
(D)
gizzard
12
which of the following describes the sequence of blood flow from the heart to a tissue?
Απάντηση
(A)
Heart→ artery→ arteriole →tissue?
13
The enzymes of the glycolytic pathway are located in the?
Απάντηση
(D)
cytoplasm
14
In insects, the structure that performs the same function as the kidney in man is the?
Απάντηση
(C)
malphigian tubule
15
The axial skeleton is found in the
Απάντηση
(A)
skull, ribs, vertebral column and breast bone
16
The reproductive system of a male mammal is made up of?
Απάντηση
(B)
testis, prostrate gland, sperm duct and penis
17
In a bean seed, absorption of water at the beginning of germination is through the?
Απάντηση
(B)
micropyle
18
The most important ecological factor in a terrestrial environment is?
Απάντηση
(D)
soil
19
The association between bacteria residing in the rumen of the ruminant is?
Απάντηση
(D)
mutualism
20
A marine protozoan is likely to have no contractile vacuole mainly because the cytoplasm is
Απάντηση
(A)
isotonic to sea water
21
In fresh water marshes and swamps, the most important abiotic factors that organisms have to adapt to is?
Απάντηση
(A)
nature of substratum
22
Which of the following biomass could be characterized by very low rainfall,cold nights, hot days, and fast blooming plants?
Απάντηση
(C)
tropical desert
23
Mass of crucible = 10g
Mass of crucible and soil before heating = 29g
Mass of a crucible and soil after heating = 18g
From the information above, determine the percentage of water in the given soil sample?
Απάντηση
(D)
60%
24
I. Onchocerciasis
II. Schistosomiasis
III.Salmonellosis
IV. Meningitis
which of the diseases listed above are associated with water?
Απάντηση
(C)
I, II and III
25
The major cause of global warming is the?
Απάντηση
(A)
burning of fossil fuel
26
The uniqueness of an individual organism in a population is accounted for by?
Απάντηση
(B)
variation
27
A phenotypic character with intermediate forms that can be graded from one extreme to the other is referred to as?
Απάντηση
(B)
continuous variation
28
A farmer's assumption that the seed from a good harvest will produce a good yield is explained by the theory of
Απάντηση
(D)
heredity
29
The nephridia in the earthworm form part of the?
Απάντηση
(D)
excretory system
30
A woman with the ability to roll her tongue (Tt) marries a man who cannot roll his tongue(tt). what is the probability of each of their children being a tongue roller?
Απάντηση
(C)
50%
31
A health condition that is known to have resulted from gene mutation is?
Απάντηση
(C)
sickle-cell anaemia
32
Plants that grow in an area that is neither too wet nor too dry are
Απάντηση
(B)
mesophytes
33
The part of a domestic fowl responsible for preventing heat loss is the?
Απάντηση
(C)
down feather
34
Which of the following animals is most adapted for water conservation?
Απάντηση
(D)
insects
35
The specialized pigment cells that are involved in colouration and colour change in animals?
Απάντηση
(B)
chromatophores
36
During the dry season in the tropics, the body metabolism of some animals slow to a minimal level in a process referred to as?
Απάντηση
(B)
aestivation
37
According to Darwin, the driving force behind evolutionary change is
Απάντηση
(A)
natural selection
38
Use the diagram above to answer this question.
The structure that controls loss of water vapour during transpiration is labelled
Απάντηση
(D)
lV
39
Use the diagram above to answer this question.
The part labelled l is the
Απάντηση
(C)
cuticle
40
Use the diagram above to answer this question.
Emulsification of fats takes place in the part labelled?
Απάντηση
(D)
lV
41
Use the diagram above to answer this question.
The content of the part labelled lll is usually?
Απάντηση
(C)
acidic
42
Use the diagram above to answer this question.
The zone of physiological stress is represented by?
Απάντηση
(D)
l and lll
43
Use the diagram above to answer this question.
The optimum temperature for the growth of the organism is
