2004 - JAMB Biology Past Questions and Answers - page 3
21
A
contract to pull the hair erect
B
conduct nervous impulses
C
carry blood and nitrogenous waste
D
produce oil for the skin
22
The type of reproduction that is common to both Hydra and yeast
A
conjugation
B
binary fission
C
grafting
D
budding
23
The eggs of birds contains relatively larger quantities of yolk than those of amphibians and reptiles because
A
birds are generally bigger in size
B
embryonic development is longer in birds
C
those of birds are fertilized internally
D
birds lay shelled eggs
24
Epigeal germination of a seed is characterized by
A
more rapid elongation of the hypocotyl than the epicotyl
B
more rapid elongation of the epicotyl than the hypocotyl
C
equal growth of both the hypocotyl and epicotyl
D
lack of growth of the hypocotyl
25
Nervous control differs from hormonal control in that the former
A
involves only chemical transmision
B
is a lower process
C
produces short-term changes
D
has no specific pathway
26
If a nursing mother is not producing enough milk, her hormonal system is probably deficient in
A
prolactin
B
testosterone
C
thyroxin
D
insulin
27
The two keys cation involved in the action potential of nervous transmissions are
A
Na+ an Fe2+
B
Mg2+ and K+
C
Na+ and K+
D
Fe2+ and Mg2+
28
A caterpillar and an aphid living in different parts of the same plant can be said to
A
occupy the same ecological niche
B
be in different habitat
C
occupy different ecological niche
D
be in the same microhabitats
29
Ecological ZoneTemperature (oC)Rainfall (mm)I45300II322000III302200IV15800
From the table above high relative humidity will be expected in zones
From the table above high relative humidity will be expected in zones
A
I and III
B
I and IV
C
II and III
D
II and IV
30
| Ecological Zone | Temperature (oC) | Rainfall (mm) |
| I | 45 | 300 |
| II | 32 | 2000 |
| III | 30 | 2200 |
| IV | 15 | 800 |
From the table above which of the zones is likely to be desert?
A
I
B
II
C
III
D
IV
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