JAMB - Biology (2016)

1
Which of the following conditions is NOT necessary for photosynthesis to take place?
Answer
(C)
Carbon(II)oxide
2
The insects in which the maxillae are modified into a long coiled proboscis is
Answer
(B)
butterfly
3
When a cell is placed in solution and the size of the cell increases, the concentration of solution is said to be
Answer
(C)
hypotonic
4
Which of the following plant hormone is responsible for ripening of fruits?
Answer
(C)
Ethylene
5
The ability of a living organism to detect and respond to changes in the environment is referred to as
Answer
(C)
irritability
6
An example of an endospermous seed is
Answer
(D)
maize grain
7
Which of the following theories was NOT considered by Darwin in his evolutionary theory?
Answer
(C)
use and disuse
8
Which of the following protects the essential parts of the flower at bud stage?
Answer
(B)
Sepals
9
which of the following is an agent of a sexually transmitted disease?
Answer
(C)
Treponema pallidum
10
Which of the following animals has homodont dentition?
Answer
(C)
Lizard
11
The movement of blood between the heart and all other parts of the body besides the lung is known as
Answer
(A)
systemic circulation
12
If the cross of a red-flowered plant with a white flowered plant produces a pink flowered plant, this is an example of
Answer
(B)
incomplete dominance
13
The largest amount of yolk is found in the egg of
Answer
(D)
aves
14
Fibrinogen and prothrombin play important roles in the
Answer
(B)
clotting of blood
15
The pathogen that cause smallpox is
Answer
(D)
poxvirus
16
The vector for the malaria parasite is a
Answer
(B)
female Anopheles mosquito
17
Which of the following pairs are social insects?
Answer
(D)
Termite and bee
18
Which of the following is NOT a method of conserving wild life?
Answer
(A)
Indiscriminate poaching
19
The importance of the mouth-brooding behaviour in Tilapia is that it
Answer
(B)
affords protection from predation for the young fish
20
The type of asexual reproduction that is common to both Paramecium and Protists is
Answer
(D)
fission
21
The micro-organisms that causes Typhoid disease is
Answer
(B)
Salmonella typhi
22
A collection of population of all living organisms that exist in a habitat is referred to as
Answer
(C)
community
23
The theory of use and disuse of organs was promulgated by
Answer
(C)
Jean Lamarck
24
The theory of natural selection was postulated by
Answer
(C)
Charles Darwin
25
The movement response of a cockroach away from a light source is
Answer
(A)
negative phototaxism
26
Which of the following can cause shrinkage of living cells?
Answer
(D)
Hypertonic solution
27
The ability of chameleon to change its colour rapidly is an adaptation for
Answer
(D)
escaping detection
28
The function of the red head in male Agama lizards is to
Answer
(C)
attract female lizards for mating purposes
29
The activity of ptyalin is likely to decrease with an increase in the concentration of
Answer
(D)
acid
30
Seed plants are divided into
Answer
(C)
angiosperms and gymnosperms
31
The adaptive importance of the nuptial flight from termite colonies is to
Answer
(B)
disperse the reproductives in order to establish new colonies
32
The sequence of the one-way gaseous exchange mechanism in a fish is
Answer
(B)
mouth ⇢ gills ⇢ operculum
33
In the nitrogen cycle, the nitrates in the soil are converted to atmospheric nitrogen by
Answer
(D)
denitrifying bacteria
34
The relationship between a termite and the protozoam in its intestine is described as
Answer
(C)
symbiosis
35
Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the
Answer
(A)
liver of humans
36
Which of the following organs regulates the levels of water. salts, hydrogen ions, and urea in the mammals?
Answer
(A)
Kidney
37
The rate of transpiration is NOT affected by
Answer
(A)
the weight of the stomata pores
38
The crossing of individuals of the same species with different genetic characters is
Answer
(A)
croos breeding
39
The hereditary characters in plants and animals are located on the
Answer
(C)
chromosome
40
The arrangement of ovules attached to the sides of a syncarpous ovary with a single chamber is referred to as
Answer
(C)
parietal placentation
41
When sickle cell carrier marries a normal woman, the probability of them having a normal offspring is
Answer
(C)
0.5
42
In which of the following groups of vertebrates is parental care mostly exhibited?
Answer
(D)
Mammalia
43
An example of a non-bio degrable pollutants is
Answer
(C)
ceramics
44
The bacteria that is found in the root nodules of leguminous plants is
Answer
(B)
rhizobium
45
Which of these organisms partly digest its food extracellularly?
Answer
(C)
Spider