2012 - JAMB Biology Past Questions and Answers - page 3
21
The significance of a very large number of termites involved in nuptial swarming is to
A
provide birds with plenty of food
B
ensure their perpetuation despite predatory pressure
C
search for a favourable place to breed
D
ensure that every individual gets a mate
22
The use and disuse of body parts and the inheritance of acquired traits were used to explain
A
Darwin's theory
B
Lamarek's theory
C
genetic drift
D
gene flow
23
From his study of Galapagos finches, Darwin derived his theory of evolution from
A
comparative anatomy
B
comparative physiology
C
fossil remains
D
comparative embryology
24
The organelle responsible for heredity is labelled
A
l
B
ll
C
lll
D
IV
25
The part labelled IV is the
A
mitochondrion
B
cell wall
C
endoplasmic reticulum
D
nucleus
26
Transportation in the xylem is represented by
A
I
B
II
C
III
D
IV
27
The arrow labelled ll represents the
A
release of oxygen
B
intake of carbon (IV) oxide
C
movement of photosynthates
D
movement of nutrients
28
The developing embryo is usually contained in the part labelled
A
IV
B
III
C
II
D
I
29
The function of the part labelled lll is to
A
produce egg cells
B
protect sperms during fertilization
C
secrete hormones during coitus
D
protect the developing embryo
30
The graph illustrates
A
the highest frequency for height of 2 metres
B
a discontinuously varying character
C
a continuously varying character
D
total yield in a cassava farm
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