The function of the red head in male Agama lizards is to
отговор
(C)
attract female lizards for mating purposes
2
Seed plants are divided into
отговор
(B)
angiosperms and gymonsperms
3
In which of the following groups of vertebrates is parental care mostly exhibited ?
отговор
(D)
Mammalia
4
The adaptive importance of nuptial flight from termite colonies is to
отговор
(A)
disperse the reproductives in order to establish new colonies
5
An example of an endospermous seed is
отговор
(A)
maize gain
6
Which of the following can cause shrinkage of living cells?
отговор
(D)
Hypertonic solution
7
Which of the following is true of leucocytes?
отговор
(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
отговор
(B)
assimilation
9
The ability of living organism to detect and respond to changes in the environment is referred to as
отговор
(B)
irritability
10
In mammals, the exchange of nutrients and metabolic products occurs in the
отговор
(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?
отговор
(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?
отговор
(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
отговор
(C)
sucrase
14
The part of the mammalian ear responsible for the maintenance of balance is the
отговор
(D)
vestibular system
15
The path followed by air as it passes through the lungs in mammals is
отговор
(A)
trachea → bronchi → bronchioles → alveoli
16
The movement response of a cockroach away from a light source can be described as
отговор
(B)
negative phototaxism
17
The vascular tissues in higher plants are responsible for
отговор
(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?
отговор
(B)
Kidney
19
The sequence of the one-way gaseous exchange mechanism in a fish is
отговор
(D)
mouth → gills → operculum
20
The type of asexual reproduction that is common to both Paramecium and protists is
отговор
(D)
fission
21
In nature, plants and animals are perpetually engaged in mutualism because
отговор
(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
отговор
(A)
16.7%
23
An example of a filter -feeding animal is
отговор
(C)
whale
24
Which of the following is a feature of the population pyramid of a developing country?
отговор
(D)
short lifespan
25
The interaction of a community of organisms with its abiotic environment constitutes
отговор
(C)
an ecosystem
26
The vector of the malaria parasite is
отговор
(B)
female Anopheles mosquito
27
Which of the following instruments is used to measure relative humidity?
отговор
(C)
Hygrometer
28
Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the
отговор
(A)
liver of humans
29
Habitats are generally classified into
отговор
(B)
aquatic and terrestrial
30
Drancunculiasis can be contacted through
отговор
(B)
drinking contaminated water
31
Which of the following groups of environmental factors are density-dependent?
отговор
(C)
Food predation, disease and accumulation of metabolites
32
Millet , sorghum, maize and onions are common crops growth in Nigeria in the
отговор
(B)
sudan savanna
33
In which of the following biomes is the south western part of Nigeria located?
отговор
(B)
Tropical rainforest
34
The inheritable characters that are determined by a gene located on the X-chromosome is
отговор
(B)
sex-linked
35
Lack of space in a population could lead to an increase in
отговор
(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
отговор
(B)
incomplete dominance
37
Which of the following theories was NOT considered by Darwin in his evolutionary theory?
отговор
(C)
Use and disuse
38
The crossing of individuals of the same species with different genetic characters is
отговор
(A)
cross breeding
39
The number of alleles controlling blood groups in humans
отговор
(A)
3
40
During blood transfusion, agglutination may occur as a result of the reaction between
отговор
(A)
contrasting antigens and antibodies
41
The fallacy in Lamarck's evolutionary theory was the assumption that
отговор
(B)
acquried traits are heritable
42
The bright coloured eye spots on the wings of moth are an example of
отговор
(D)
mimicry
43
The wings of a bat and those of a bird are examples of
отговор
(A)
convergent evolution
44
Use the diagram above to answer this question.
Which of the organisms represented are notable agricultural pests?
