The structure that are common to both plant and animal cells are labelled
উত্তর
(C)
II and III
2
Food is stored in the structure labelled
উত্তর
(C)
IV
3
One distinctive feature in the life history of liverworts is that they exhibit
উত্তর
(A)
Alternation of generation
4
A noticeable adaptation of the animal to its aquatic habitat is the possession of
উত্তর
(C)
webbed digits
5
The process of water loss and intake indicated by the arrow labelled I and II are respectively
উত্তর
(D)
evaporation and osmosis
6
The umbrella shaped fruiting body of a fully developed mushroom is the
উত্তর
(A)
Pileus
7
The similarity among organisms belonging to the same group will be least within each
উত্তর
(C)
kingdom
8
Hermophroditic reproduction can be found among the
উত্তর
(C)
Annelids and molluscs
9
An insect whose economic importance is both harmful and beneficial is the
উত্তর
(D)
Butterfly
10
The cell component that is present in a prokaryotic cell is the
উত্তর
(B)
Ribosome
11
The stunted growth of a leguminous plant suffering from nitrogen deficiency may be corrected by inoculating the soil with
উত্তর
(C)
Rhizobium
12
If water that has been coloured red is poured at the base of a wilting plant, it will appear as a red stain in the cells of the
উত্তর
(A)
xylem
13
The aim of the experiment is to demonstrate
উত্তর
(B)
the part played by the pleural cavity and diaphragm in respiration
14
In the experimental set-up, the rubber sheet represents the organ called
উত্তর
(C)
diaphragm
15
The dark reaction of photosynthesis involves the
উত্তর
(A)
reduction of carbon(IV)oxide to organic
16
The experiment is used to demonstrate that
উত্তর
(B)
transpiration occurs through the leaves
17
In the experiment, the layer of oil serves to prevent water loss
উত্তর
(B)
evaporation
18
Organisms I, II, III and IV have surface/volume ratios of 1:2, 1:3, 1:4 and 1:5 respectively. The organism that is likely to have the most complex transport system is
উত্তর
(A)
IV
19
The part of the mammalian digestive system where absorption of nutrient takes place is the
উত্তর
(A)
ileum
20
The best method of propagating sugarcane is by
উত্তর
(D)
Stem cuttings
21
In mammalian males, the excretory and reproductive systems share the
উত্তর
(C)
Urethra
22
Metabolic production of urea is carried out in the
উত্তর
(B)
Liver
23
The structure can be found in the
উত্তর
(B)
Peripheral and central nervous system
24
The point marked I is referred to as
উত্তর
(D)
node of Ranvier
25
Homologous pairs of chromosome separate during
উত্তর
(D)
Meiosis
26
An example of a caryopsis is
উত্তর
(B)
Maize grain
27
The response of plants to external stimuli in a non-directional manner is known as
উত্তর
(D)
Nastic movement
28
The most important hormone that induces the ripening of fruit is
উত্তর
(A)
Ethylene
29
A density-dependent factor that regulates the population size of organism is
উত্তর
(A)
Disease
30
One example of fossil fuels is
উত্তর
(C)
Coal
31
The most effective method of dealing with non-biodegradable pollutant is by
উত্তর
(B)
Recycling
32
The correct sequence of biomes from northern to southern Nigeria is
A limited factor in a plant population near a chemical factory is likely to be
উত্তর
(D)
pH
35
Soil fertility can best be conserved by the activities of
উত্তর
(D)
Microbes
36
The pioneer organisms in ecological succession are usually the
উত্তর
(B)
lichens
37
If a DNA strand has a base sequence TCA, its complementary strand must be
উত্তর
(D)
AGT
38
A man and his wife are both heterozyous for the sickle-cell trait. The likely percentage of their offspring that will be either carriers or sicklers is
উত্তর
(A)
75%
39
If the pair of alleles for baldness is given as Bb, a female carrier will be denoted by
উত্তর
(D)
XBbXb
40
An organism that has been extensively used to test the chromosomes theory of heredity is
উত্তর
(A)
Drosophila melanogaster
41
A feature associated with the Y-chromosome in human is
উত্তর
(C)
facial hairs
42
The type of reproduction that leads to variation animal and plant population is
উত্তর
(B)
sexual
43
An insect with a mandibulate mouth part will obtain its food by
উত্তর
(A)
biting and chewing
44
An argument against Lamarck's theory of evolution is that
উত্তর
(C)
acquired traits cannot be passed on to the offspring
45
The presence of sunken stomata and the folding of leaves are adaptations to
