2006 - JAMB Biology Past Questions and Answers - page 3
21
Which of the following vertebrates has the most simple structured heart
A
reptile
B
fish
C
mammal
D
amphibian
correct option: b
Users' Answers & Comments22
One primitive feature of the coelenterates is the possession of
A
a dorsal mouth
B
radial symmetry
C
bilateral symmetry
D
a false foot
correct option: b
Users' Answers & Comments23
A characteristic that best exemplifies the evolutionary advancement of mammals over other vertebrates is the
A
vivparous mode of reproduction
B
possession of paired limbs
C
terrestrial mode of life
D
possession of a heart
correct option: a
Users' Answers & Comments24
An organism which exhibits extracellular digestion is
A
spirogyra
B
paramecium
C
amoeba
D
rhizopus
correct option: d
Users' Answers & Comments25
The causative agent of typhoid fever is
A
salmonella
B
entamoeba
C
escherichia
D
shigella
correct option: a
Users' Answers & Comments26
Grasses recover quickly from bush fires in the savanna because of their
A
perennating organs
B
rapid growth rate
C
fibrous roots
D
succulent stems
correct option: a
Users' Answers & Comments27
Climax communities in a biotic succession are usually characterized by
A
a constant change in the appearance of the communities
B
different species that are constantly changing
C
a stable composition of plant and animal species
D
rapid changes in the plant and animal species
correct option: c
Users' Answers & Comments28
The soil type that contain nutrients which are not readily available for plants is
A
alluvial
B
clayey
C
sandy
D
loamy
correct option: b
Users' Answers & Comments29
A population that doubles in size at constant intervals is an indication of
A
sigmoid growth
B
exponential growth
C
population explosion
D
rapid growth
correct option: b
Users' Answers & Comments30
Hassan and Hussain are identical twins but Hassan grows taller and fatter from Hussain. This is probably because
A
Hassain inherits genes for tallness and fattness from the father
B
They have dissimilar genotypes
C
Hussain is endowed with genes for shortness and thinness
D
They are raised in different environment
correct option: b
Users' Answers & Comments