Study and practice Biology past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.
What type of relationship exists in the large intestine of the sheep, between bacteria and the sheep?
ASymbiosis
BCommensalism
CPredation
DParasitism
ESaprophytism
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Question 12
waec1996
Which of the following pathways will energy follow to reach plasmodium in the red blood cells?
AI, II and III
BI and II
CII only
DIII and IV
EIV and I
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Question 13
waec1996
Which pathway directly leads to transfer of useful energy within a biological community?
AI only
BII and III only
CI and III only
DI and II only
EIV only
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Question 14
waec1996
Which of these groups of organisms is responsible for capturing energy for the biotic community?
ADecomposers
BOmnivores
CConsumers
DProducers
EDetritus feeders
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Question 15
waec1996
Which of the following is the correct method of collecting soil organism?
AHeating the soil sample in an oven
BAerating the soil sample
CRefrigerating the soil for some hours
DPouring hot water on the soil to enable the organism float
EPlacing a lighted electric bulb over soil in a funnel
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Question 16
waec1996
The frequency of andropogon in a grass lawn is 90 by 100. Throws were made with 1 meter square quadrat.
What is the density of andropogon in the field?
A0.09 per m2
B0.90 per m2
C9.0 per m2
D90 per m2
E900 per m2
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Question 17
waec1996
Which of these is not a true characteristic of the tropical rain forest?
AVegetation consists predominantly of tall trees, with thick canopy
BForest is rich in epipphysis and climbers
CAnnual rainfall is less than 100 cm
Dinterior has low light intensity, high humidity and damp floor
EFruits of trees are often large-sized and are generally without adaptation to wind dispersal
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Question 18
waec1996
The entire habits and habitat of an organism can be described as its
Aecological community
Becological niche
Chabitat factor
Dbiotic factor
Eabiotic factor
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Question 19
waec1996
Which of the following processes is not due to interaction between the biotic and abiotic components of an
ecosystem?
ASoil nutrient depletion
BCondensation
CDecomposition
DOsmosis
EPhotosynthesis
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Question 20
waec1996
Hydra captures small crustaceans by means of
Apseudopodia
Bmusculo-epithelial cells
Ctentacles
Denteron
Eectoderm
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Question 21
waec1996
Which of the following is responsible for the conversion of nitrites to nitrates in the nitrogen cycle?
ADenitrifying bacteria
BNitrifying bacteria
CLightening
DFungi
EBrown algae
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Question 22
waec1996
In a water culture experiment, the culture solution in a transparent beaker turned green. What precaution
should have been taken to prevent the culture solution from turning green?
AChanging the culture solution regularly
BIncreasing the number of times the culture is aerated
CCovering the transparent beaker with black cloth
DAdding warm alcohol to bleach the green colour
ESterilizing the beaker in a hot oven before use
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Question 23
waec1996
In grasshopper/cockroach digestion starts from the
Aoesophagus
Bcrop
Cgizzard
Dmidgut
Emouth
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Question 24
waec1996
What is the importance of the part labelled II to the seedling?
It
Aprotects the foliage leaves
Bgrows into the first foliage leaves
Clater develops into the fruit
Dprovides the seedling with food
Eserves as the water reservoir for the seedling
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Question 25
waec1996
The part labelled II represents the
Aroot
Bepicotyl
Chypocotyl
Dcotyledon
Ehilum
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Question 26
waec1996
The part labelled I in A represents the
Aroot
Bradicle
Chypocotyl
Dshoot
Estem
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Question 27
waec1996
Which of the following labelled structures is similar to the locomotory structure in
Euglena?
AI
BII
CIII
DIV
EV
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Question 28
waec1996
Which of the following labelled structures secretes enzymes which facilitate penetration
of the egg?
