JAMB - Biology (1999)

1
The organism that has a hydrostatic skeleton is
Trả lời
(D)
earthworm
2
The possession of scales, laying of eggs with shells and bony structure of the head are characteristics shared by
Trả lời
(A)
birds and reptiles
3
The group of Arthropods that has no antennae is the
Trả lời
(C)
Arachnida
4
The structure that is most commonly identified in all living cells under the light microscope is the
Trả lời
(C)
nucleus
5
Which of the following is an organ?
Trả lời
(B)
Liver
6
The structure labelled II is used for
Trả lời
(B)
feeling
7
The structure labeled III represents the
Trả lời
(C)
proboscis
8
The division of a body into two equal halves along a longitudinal plane is called
Trả lời
(A)
bilateral symmetary
9
In which of the following organisms does each cell combine the function of nutrition, reproduction and growth?
Trả lời
(D)
Spirogyra
10
They key event in the transition of the amphibians from water to land is the
Trả lời
(A)
replacement of the gills with lungs
11
In plant cells, the chloroplast are located
Trả lời
(D)
within the cytoplasm
12
In the woody stems, gaseous exchange takes place through the
Trả lời
(C)
lenticels
13
Substance manufactured by the leaves are transported to other parts of the plant through the
Trả lời
(A)
phloem
14
After a meal of yam has been digested, the highest concentration of glucose is to be found in the
Trả lời
(C)
hepatic portal vein
15
The dark reaction of photosynthesis involves
Trả lời
(C)
use of carbon (IV) oxide to produce glucose using ATP
16
Mammals acclimatize to reduced oxygen content at high altitudes by
Trả lời
(C)
the stimulation of marrow to produce more erythrocytes
17
The modes of nutrition in Nitrobacter, Ascaris and Homo sapiens respectively are
Trả lời
(B)
chemosynthetic, parasitic and holozoic
18
The richest source of vitamin A are
Trả lời
(B)
palm oil and carrot
19
The force that holds water together in the form of a stream within the xylem tube is the
Trả lời
(A)
cohesion of water molecules to one another by hydrogen bonds
20
Yellowing of leaves is a symptom associated with deficiency of
Trả lời
(D)
magnesium, nitrogen and iron
21
The lymphatic system of mammals rejoins the blood circulatory system at the
Trả lời
(B)
subclavian vein
22
In dissection, the rib cage of mammal has to be opened in order to expose the
Trả lời
(C)
heart
23
Fertilization in humans usually takes place in the
Trả lời
(D)
upper part of the oviduct
24
Insects visit flowers in order to
Trả lời
(A)
feed on the nectar
25
In epigeal germination, the cotyledons are
Trả lời
(A)
carried above the ground by the elongation hypocotyl
26
Bacteria multiply rapidly by means of
Trả lời
(C)
binary fission
27
The correct sequence for the perception of smell in mammals is
Trả lời
(D)
dissolved chemicals → sensory cells → olfactory nerve → brain
28
The part labelled III is for
Trả lời
(B)
insulation
29
The structure labelled II is known as
Trả lời
(B)
lymph vessel
30
In mammals, the organ which performs digestive and endocrine functions is the
Trả lời
(B)
pancreas
31
Th chitin in the exoskeleton of many arthropods is strengthened by
Trả lời
(D)
proteins
32
The structure labelled II articulates with III to form
Trả lời
(B)
hinge joint
33
Which of the bones is the radius?
Trả lời
(D)
IV
34
The construction of dams may lead to an increase in the prevalence of
Trả lời
(D)
malaria, bilharziasis and onchocerciasis
35
Floating microscopic heterotrophs are mostly grouped as
Trả lời
(B)
zooplankton
36
Vaccination is carried out in order to
Trả lời
(D)
stimulate the production of antibodies
37
A soil consisting of alumina and iron (II)oxide is known as
Trả lời
(C)
laterite
38
The sign + is used to indicate an association where an organism gains, while 0 is used where an organism is unaffected. An association indicated as +0 is known as
Trả lời
(B)
commensalism
39
Which of the following characterizes the white mangrove?
Trả lời
(C)
Breathing roots
40
If the offspring of a cross between a brown mouse (bb) and a black mouse (BB) are allowed to interbreed, how many different genotypes would result?
Trả lời
(B)
3
41
The biological factor that is unique to each individual is the
Trả lời
(A)
DNA
42
From evolutionary standpoint , the older a fossil-bearing rocks is, the more likely it is to contain
Trả lời
(B)
invertebrates as opposed to vertebrates
43
The very bright colours in some types of mushroom
Trả lời
(A)
are warning that they may be poisonous
44
The least adaptive feature of aboreal life is the
Trả lời
(D)
shading of coat colour
45
Which of the following is one of Lamarck's theories?
Trả lời
(D)
New species originates through the inheritance of acquired traits