Biology 2008 | Study Mode

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Question 21
A
the loss of water
B
the loss of biological diversity
C
a decrease in animal population
D
an increase in soil fertility
Explanation

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Correct option: B
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Question 22
A
hydra viridis and zoochlorellae
B
human and lice
C
shark and remora fish
D
bread and rhizopus stolonifer
Explanation

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Correct option: A
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Question 23
A
tidal zone
B
intertidal zone
C
littoral zone
D
euphotic zone
Explanation

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Correct option: C
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Question 24
A
desiccation
B
floatation
C
salinity
D
humidity
Explanation

Desiccation refers to the drying out of a living organism, such as when aquatic animals are taken out of water. The intertidal zones lay exposed twice daily due to tidal movements.


Correct option: A
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Question 25
A
mesophytes
B
epiphytes
C
hydrophytes
D
xerophytes
Explanation

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Correct option: D
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Question 26
A
pH
B
oxygen
C
light
D
temperature
Explanation

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Correct option: C
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Question 27
A
6.25%
B
10.36%
C
14.28%
D
43.28%
Explanation

volume of air in the soil = (350 + 500) - 800
= 850 - 800 = 50 cm3
% of air in the soil = (volume of air)/total volume x (100)/1 = (50)/800 x 100 = 6.25%


Correct option: A
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Question 28
A
schistosomiasis
B
onchocerciasis
C
poliomyelitis
D
salmonellosis
Explanation

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Correct option: A
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Question 29
A
oxygen
B
carbon (IV) oxide
C
ammonia
D
alkalinity
Explanation

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Correct option: A
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Question 30
A
monkeys
B
human females
C
human males
D
chimpanzees
Explanation

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Correct option: A

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