JAMB - Biology (2006)

• 1

  Night-blindness result from a deficiency of

  回答

  (B)

  Vitamin A
• 2

  The product of excretion common to the mammalian kidney, lung and skin is

  回答

  (C)

  water
• 3

  An increase in air pressure in the lungs is due to the

  回答

  (C)

  relaxation of the diaphragm
• 4

  One basic similarity between nervous and endocrine system is that they both

  回答

  (C)

  involve the use of chemical substances
• 5

  The organ situated in the pericardial cavity of a mammal is the

  回答

  (A)

  heart
• 6

  A unique characteristics of the cervical vertebrae is the presence of

  回答

  (D)

  vertebrartarial canal
• 7

  In rabbit the chamber of the heart that receives oxygenated blood from the lungs is the

  回答

  (B)

  left auricle
• 8

  The formation of water in the tissue respiration results from the

  回答

  (B)

  reduction of oxygen by hydrogen
• 9

  Water is necessary for a germinating seed because it

  回答

  (B)

  activate the enzymes
• 10

  Which of the following produces both hormones and enzymes

  回答

  (B)

  pancreas
• 11

  The mammalian vein which starts with and ends in a capillary network is the

  回答

  (D)

  hepatic portal vein
• 12

  In the transverse of a dicot stem, the region lying between the endodermis and the vascular bundle is the

  回答

  (B)

  pericycle
• 13

  The two normal types of sex chromosomes are

  回答

  (D)

  XX and XY
• 14

  One advantage of variation in a species population is that individuals

  回答

  (D)

  are better adapted to changes
• 15

  Mendel's second law of inheritance states that

  回答

  (B)

  alleles segregates independently
• 16

  The intensity of competition among animals in a given area will increase with 

  回答

  (B)

  an increase in population size
• 17

  The part of the mammalian skin involved in temperature regulation is the

  回答

  (A)

  sweat gland
• 18

  The role of the Golgi complex in an eukaryotic cell is to

  回答

  (D)

  transport organic materials in and out of the cells
• 19

  The dominant phase in the life cycle of a bryophyte is the

  回答

  (C)

  gametophyte
• 20

  The evidence that supports the advancement of ferns over mosses is derived from

  回答

  (A)

  comparative anatomy
• 21

  Which of the following vertebrates has the most simple structured heart?

  回答

  (B)

  fish
• 22

  One primitive feature of the coelenterates is the possession of

  回答

  (B)

  radial symmetry
• 23

  A characteristic that best exemplifies the evolutionary advancement of mammals over other vertebrates is the

  回答

  (A)

  viviparous mode of reproduction
• 24

  An organism which exhibits extracellular digestion is

  回答

  (D)

  rhizopus
• 25

  The causative agent of typhoid fever is

  回答

  (A)

  salmonella
• 26

  Grasses recover quickly from bush fires in the savanna because of their

  回答

  (A)

  perennating organs
• 27

  Climax communities in a biotic succession are usually characterized by

  回答

  (C)

  a stable composition of plant and animal species
• 28

  The soil type that contain nutrients which are not readily available for plants is

  回答

  (B)

  clayey
• 29

  A population that doubles in size at constant intervals is an indication of

  回答

  (B)

  exponential growth
• 30

  Hassan and Hussain are identical twins but Hassan grows taller and fatter from Hussain. This is probably because

  回答

  (D)

  They are raised in different environment
• 31

  

  The organ through which the embryo receives food, water and oxygen is labelled

  回答

  (C)

  II
• 32

  Mammals are capable of producing hypertonic urine mainly because of re-absorption in the

  回答

  (D)

  Loop of henle
• 33

  

  Using the diagram, sexual reproduction is illustrated in

  回答

  (B)

  I
• 34

  

  Using the diagram, A plant that exhibits the type of reproduction shown in IV is

  回答

  (C)

  bryophyllum
• 35

  

  Using the diagram, the part labelled IV is for

  回答

  (C)

  protection
• 36

  

  The diagram represents the structure of

  回答

  (D)

  DNA
• 37

  

  In the diagram, the part labelled I represents the

  回答

  (A)

  base pairs
• 38

  

  In the diagram, the change in the length of the neck of the giraffes shown was brought about by

  回答

  (D)

  natural selection
• 39

  

  In the diagram, the variation illustration is

  回答

  (B)

  morphological
• 40

  

  In the diagram, The economic importance of the larva is that it

  回答

  (D)

  feeds on the leaves of crops
• 41

  

  In the diagram, the type of adaptation shown in the larva is

  回答

  (D)

  disruptive colouration
• 42

  

  In the diagram, The maxillary palp is labelled?

  回答

  (B)

  iv
• 43

  

  In the diagram, the structure labelled I is sensitive to

  回答

  (D)

  chemicals and touch
• 44

  

  In the diagram, A unique characteristic that distinguishes the class of vertebrates represented from other vertebrates is the presence of

  回答

  (D)

  a covering of feathers
• 45

  

  In the diagram, the structures used for offense and defense are labelled

  回答

  (B)

  i and ii