2001 - JAMB Biology Past Questions and Answers - page 4
31
The greatest influence on a stable ecosystem in nature is exerted by
A
man
B
pollution
C
animals
D
rainfall
correct option: b
Users' Answers & Comments32
The physical space occupied by an organism together with its functional role in community can be described as
A
environment
B
biome
C
niche
D
habitat
correct option: c
Users' Answers & Comments33
A freshwater pond may contain
A
tadpole, water boatman, leeches and crab
B
water beetle, shrimps, water snail and water bug
C
water lily, fish, water scorpion and dragon larva
D
pon skater, water lily, shark and mosquito larva
correct option: c
Users' Answers & Comments34
The hygrometer is used for measuring
A
relative humudity
B
specific gravity
C
rainfall
D
salinity
correct option: a
Users' Answers & Comments35
The distribution of plants in a rain forest is governed mainly by
A
vegetation
B
soil types
C
amount of sunlight
D
rainfall pattern
correct option: d
Users' Answers & Comments36
Both recessive and dominant characters are found
A
on different chromosomes in the cell
B
at the same locus of a homologous chromosome
C
at different loci of a homologous chromosome
D
on the same chromatid in a chromosome
correct option: b
Users' Answers & Comments37
The probability of a baby being a boy or a girl depends on the contribution of the
A
father's sex cell
B
father's somatic chromosome
C
mother's sex cell
D
mother's X-chromosome
correct option: a
Users' Answers & Comments38
Which of the following statements is true of blood groups and blood transfusion?
A
Group O is the universal recipient
B
Group A can donate to group A only
C
Group AB is the universal recipient
D
Group B can donate to group B only
correct option: c
Users' Answers & Comments39
Which of the following is likely to encourage inbreeding in plants?
A
Dioecious
B
Protandrous
C
Monoecious
D
Hermaphrodite
correct option: c
Users' Answers & Comments40
A tall plants crossed with a dwarf one produces offspring of which half are tall and half are dwarf. What are the genotypes of the parents?
A
TT, TT
B
Tt, tt
C
TT, tt
D
Tt, Tt
correct option: b
Users' Answers & Comments