The function of the red head in male Agama lizards is to
Απάντηση
(C)
attract female lizards for mating purposes
2
Seed plants are divided into
Απάντηση
(B)
angiosperms and gymonsperms
3
In which of the following groups of vertebrates is parental care mostly exhibited ?
Απάντηση
(D)
Mammalia
4
The adaptive importance of nuptial flight from termite colonies is to
Απάντηση
(A)
disperse the reproductives in order to establish new colonies
5
An example of an endospermous seed is
Απάντηση
(A)
maize gain
6
Which of the following can cause shrinkage of living cells?
Απάντηση
(D)
Hypertonic solution
7
Which of the following is true of leucocytes?
Απάντηση
(C)
they are large and nucleated
8
The conversion of a nutrient into a molecule in the body of a consumer is referred to as
Απάντηση
(B)
assimilation
9
The ability of living organism to detect and respond to changes in the environment is referred to as
Απάντηση
(B)
irritability
10
In mammals, the exchange of nutrients and metabolic products occurs in the
Απάντηση
(D)
lymph
11
I. Parasitism → Sundew. ll. Autotrophism →Amoeba. III. Saprophytism → Alga. IV Heterotrophism → Agama.
Which of the above modes of nutrition is correctly matched with the organism that exhibits it?
Απάντηση
(C)
lV
12
Use the following information to answer the question below.
I. Test tube containing cane sugar and water . ll. Test tube containing cane sugar and diluted acid. III. Test tube containing cane sugar and its degrading enzyme .
In which of the test tubes will glucose be detected after complete hydrolysis?
Απάντηση
(B)
ll and lll only
13
Use the following information to answer the question below.
I. Test tube containing cane sugar and water . ll. Test tube containing cane sugar and diluted acid. III. Test tube containing cane sugar and its degrading enzyme .
The enzyme involved in the hydrolysis is
Απάντηση
(C)
sucrase
14
The part of the mammalian ear responsible for the maintenance of balance is the
Απάντηση
(D)
vestibular system
15
The path followed by air as it passes through the lungs in mammals is
Απάντηση
(A)
trachea → bronchi → bronchioles → alveoli
16
The movement response of a cockroach away from a light source can be described as
Απάντηση
(B)
negative phototaxism
17
The vascular tissues in higher plants are responsible for
Απάντηση
(A)
the movement of food and water
18
Which of the following organs regulates the levels of water, salts , hydrogen ions and urea in the mammalian blood?
Απάντηση
(B)
Kidney
19
The sequence of the one-way gaseous exchange mechanism in a fish is
Απάντηση
(D)
mouth → gills → operculum
20
The type of asexual reproduction that is common to both Paramecium and protists is
Απάντηση
(D)
fission
21
In nature, plants and animals are perpetually engaged in mutualism because
Απάντηση
(C)
they utilize respiratory wastes of each other
22
In an experiment to determine the percentage of humus and water in a soil sample, the following results were obtained
Weight of the evaporating basin alone = 80.5g
Weight of basin and soil = 101.5g
Weight after drying the soil in the oven = 99.0g
Weight of basin and roasted soil = 95.5g
The percentage of humus in the soil sample is
Απάντηση
(A)
16.7%
23
An example of a filter -feeding animal is
Απάντηση
(C)
whale
24
Which of the following is a feature of the population pyramid of a developing country?
Απάντηση
(D)
short lifespan
25
The interaction of a community of organisms with its abiotic environment constitutes
Απάντηση
(C)
an ecosystem
26
The vector of the malaria parasite is
Απάντηση
(B)
female Anopheles mosquito
27
Which of the following instruments is used to measure relative humidity?
Απάντηση
(C)
Hygrometer
28
Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the
Απάντηση
(A)
liver of humans
29
Habitats are generally classified into
Απάντηση
(B)
aquatic and terrestrial
30
Drancunculiasis can be contacted through
Απάντηση
(B)
drinking contaminated water
31
Which of the following groups of environmental factors are density-dependent?
Απάντηση
(C)
Food predation, disease and accumulation of metabolites
32
Millet , sorghum, maize and onions are common crops growth in Nigeria in the
Απάντηση
(B)
sudan savanna
33
In which of the following biomes is the south western part of Nigeria located?
Απάντηση
(B)
Tropical rainforest
34
The inheritable characters that are determined by a gene located on the X-chromosome is
Απάντηση
(B)
sex-linked
35
Lack of space in a population could lead to an increase in
Απάντηση
(C)
disease rate
36
If the cross of a red-flowered plant with a white-flowered plant produces a pink-flowered plant, it is an example of
Απάντηση
(B)
incomplete dominance
37
Which of the following theories was NOT considered by Darwin in his evolutionary theory?
Απάντηση
(C)
Use and disuse
38
The crossing of individuals of the same species with different genetic characters is
Απάντηση
(A)
cross breeding
39
The number of alleles controlling blood groups in humans
Απάντηση
(A)
3
40
During blood transfusion, agglutination may occur as a result of the reaction between
Απάντηση
(A)
contrasting antigens and antibodies
41
The fallacy in Lamarck's evolutionary theory was the assumption that
Απάντηση
(B)
acquried traits are heritable
42
The bright coloured eye spots on the wings of moth are an example of
Απάντηση
(D)
mimicry
43
The wings of a bat and those of a bird are examples of
Απάντηση
(A)
convergent evolution
44
Use the diagram above to answer this question.
Which of the organisms represented are notable agricultural pests?
