JAMB - Biology (2011)

• 1

  The function of the red head in male Agama lizards is to

  回答

  (C)

  attract female lizards for mating purposes
• 2

  Seed plants are divided into

  回答

  (B)

  angiosperms and gymonsperms
• 3

  In which of the following groups of vertebrates is parental care mostly exhibited ?

  回答

  (D)

  Mammalia
• 4

  The adaptive importance of nuptial flight from termite colonies is to

  回答

  (A)

  disperse the reproductives in order to establish new colonies
• 5

  An example of an endospermous seed is

  回答

  (A)

  maize gain
• 6

  Which of the following can cause shrinkage of living cells?

  回答

  (D)

  Hypertonic solution
• 7

  Which of the following is true of leucocytes?

  回答

  (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

  回答

  (B)

  assimilation
• 9

  The ability of living organism to detect and respond to changes in the environment is referred to as

  回答

  (B)

  irritability
• 10

  In mammals, the exchange of nutrients and metabolic products occurs in the

  回答

  (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?

  回答

  (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?

  回答

  (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

  回答

  (C)

  sucrase
• 14

  The part of the mammalian ear responsible for the maintenance of balance is the

  回答

  (D)

  vestibular system
• 15

  The path followed by air as it passes through the lungs in mammals is

  回答

  (A)

  trachea → bronchi → bronchioles → alveoli
• 16

  The movement response of a cockroach away from a light source can be described as

  回答

  (B)

  negative phototaxism
• 17

  The vascular tissues in higher plants are responsible for

  回答

  (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?

  回答

  (B)

  Kidney
• 19

  The sequence of the one-way gaseous exchange mechanism in a fish is

  回答

  (D)

  mouth → gills → operculum
• 20

  The type of asexual reproduction that is common to both Paramecium and protists is

  回答

  (D)

  fission
• 21

  In nature, plants and animals are perpetually engaged in mutualism because

  回答

  (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

  回答

  (A)

  16.7%
• 23

  An example of a filter -feeding animal is

  回答

  (C)

  whale
• 24

  Which of the following is a feature of the population pyramid of a developing country?

  回答

  (D)

  short lifespan
• 25

  The interaction of a community of organisms with its abiotic environment constitutes

  回答

  (C)

  an ecosystem
• 26

  The vector of the malaria parasite is

  回答

  (B)

  female Anopheles mosquito
• 27

  Which of the following instruments is used to measure relative humidity?

  回答

  (C)

  Hygrometer
• 28

  Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the

  回答

  (A)

  liver of humans
• 29

  Habitats are generally classified into

  回答

  (B)

  aquatic and terrestrial
• 30

  Drancunculiasis can be contacted through

  回答

  (B)

  drinking contaminated water
• 31

  Which of the following groups of environmental factors are density-dependent?

  回答

  (C)

  Food predation, disease and accumulation of metabolites
• 32

  Millet , sorghum, maize and onions are common crops growth in Nigeria in the

  回答

  (B)

  sudan savanna
• 33

  In which of the following biomes is the south western part of Nigeria located?

  回答

  (B)

  Tropical rainforest
• 34

  The inheritable characters that are determined by a gene located on the X-chromosome is

  回答

  (B)

  sex-linked
• 35

  Lack of space in a population could lead to an increase in

  回答

  (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

  回答

  (B)

  incomplete dominance
• 37

  Which of the following theories was NOT considered by Darwin in his evolutionary theory?

  回答

  (C)

  Use and disuse
• 38

  The crossing of individuals of the same species with different genetic characters is

  回答

  (A)

  cross breeding
• 39

  The number of alleles controlling blood groups in humans

  回答

  (A)

  3
• 40

  During blood transfusion, agglutination may occur as a result of the reaction between

  回答

  (A)

  contrasting antigens and antibodies
• 41

  The fallacy in Lamarck's evolutionary theory was the assumption that

  回答

  (B)

  acquried traits are heritable
• 42

  The bright coloured eye spots on the wings of moth are an example of

  回答

  (D)

  mimicry
• 43

  The wings of a bat and those of a bird are examples of

  回答

  (A)

  convergent evolution
• 44

  

  Use the diagram above to answer this question.
  
  Which of the organisms represented are notable agricultural pests?

  回答

  (B)

  l and IV
• 45

  

  Use the diagram above to answer this question.
  
  The gas evolved in the process is

  回答

  (A)

  carbon (IV) oxide