2005 - JAMB Biology Past Questions and Answers - page 4
31
Which of the following is a homostatic response in humans?
A
Withdrawing the hand from a hot object
B
The mouth getting watery when food is sighted
C
yawning owing to tiredness
D
shivering in a cold environment
correct option: d
Users' Answers & Comments32
A
15oC
B
19oC
C
24oC
D
33oC
correct option: c
Users' Answers & Comments33
A
15oC
B
19oC
C
24oC
D
33oC
correct option: a
Users' Answers & Comments34
A
I and II
B
II and III
C
III and IV
D
IV and I
correct option: a
Users' Answers & Comments35
A
cloud
B
ground water
C
plant
D
ocean
correct option: d
Users' Answers & Comments36
The Mambila plateau is a unique Nigerian biome located in
A
Plateau state
B
Borno state
C
Taraba state
D
Benue state
correct option: c
Users' Answers & Comments37
In Nigeria, the guinea savanna belt borders the
A
mangrove swamps and the sahel savanna
B
rainforests and the sudan savanna
C
desert and the sudan savanna
D
rainforests and the deserts
correct option: b
Users' Answers & Comments38
The population density of Tridex in an abandoned square farm land of side 200 m was found to be 5 plants per m2. The population size of the plant on the farm is
A
40
B
1000
C
40000
D
200000
correct option: d
Users' Answers & Comments39
Secondary succession is much faster than primary succession because
A
pioneer colonizers are more in number
B
soil is already present
C
secondary seres require less nutrients
D
species competition is increased
correct option: a
Secondary succession is usually much quicker than primary succession for the following reasons:
There is already an existing seed bank of suitable plants in the soil.
Root systems undisturbed in the soil, stumps and other plant parts from previously existing plants can rapidly regenerate.
The fertility and structure of the soil has also already been substantially modified by previous organisms to make it more suitable for growth and colonization.
Users' Answers & CommentsThere is already an existing seed bank of suitable plants in the soil.
Root systems undisturbed in the soil, stumps and other plant parts from previously existing plants can rapidly regenerate.
The fertility and structure of the soil has also already been substantially modified by previous organisms to make it more suitable for growth and colonization.
40
which of the following is used to test for the presence of lime in a soil sample?
A
H2SO4(aq)
B
NaOH(aq)
C
HCl(aq)
D
HNO3(aq)
correct option: b
Users' Answers & Comments