1990 - JAMB Biology Past Questions and Answers - page 5
41
The elephant grass is propagated vegetatively by means of
A
corms
B
bubils
C
suckers
D
stolons
correct option: d
Users' Answers & Comments42
The part of the ear that is concerned with balance is the
A
semi-circular canals
B
incus
C
malleus
D
Eustachian tube
correct option: a
Users' Answers & Comments43
In organism where the 2nd number of chromosomes is 16, the number of chromosomes in each gamete will be
A
32
B
16
C
8
D
4
correct option: c
Users' Answers & Comments44
What will be the result of the first filial generation (F1) and the second filial generation (F2) of a mono-hybrid cross between pure line normal-winged Drosophilia flies and pure line short-winged flies, if the gene for the normal wing is dominant?
A
F1 flies all short-winged and F2 flies all normal-winged
B
F1 flies all normal and F2 flies all short-winged
C
F1 flies all short-winged and three-quarters of F2 flies are short-winged
D
F1 flies all normal-winged and three-quarters of F2 flies are normal-winged
correct option: d
Users' Answers & Comments45
A
Prophase
B
Metaphase
C
Anaphase
D
Telophase
correct option: c
Users' Answers & Comments46
An individual in the AB blood group is a universal recipient for blood donation because
A
all the red blood cells do not carry antigen
B
all the red blood cells carry antigen
C
all the red blood cells carry antigen
D
there are no anti-A and anti-B antibodies in the serum
correct option: d
Users' Answers & Comments47
Haemophilia results from the mutation of the genes
A
in the sex chromosome
B
which control skin colour
C
which control the mechanism for blood-clotting
D
which control the formation of haemoglobin
correct option: c
Users' Answers & Comments48
In a savanna ecosystem the abiotic factors include
A
legumes, temperature and sandy soil
B
water, temperature and soil
C
minerals, oxygen and reptiles
D
water, soil and grasses
correct option: b
Users' Answers & Comments49
A
Praying mantis
B
Hawk
C
Mouse
D
Grasshopper
correct option: c
Users' Answers & Comments50
which of the organisms will have the lowest population in an ecosystem?
A
Hawk
B
Cowpea
C
Praying mantis
D
Mouse
correct option: a
Users' Answers & Comments