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Question 1 Biology | WAEC/GCE (2017)
A
Porifera 
B
Cnidaria 
C
Platyheminthes 
D
Nematoda 
Explanation.
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Porifera are 'pore bearing' organisms, commonly known as sponges, are the only multicellular organisms without a nervous system. Their response to stimuli is by a contraction in their bodies.


Correct Option:
A
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Question 2 Biology | WAEC/GCE (2017)
A
shape of locomotory organs 
B
blunt anterior and pointed posterior 
C
presence of micro and mega nuclei in both 
D
presence of anterior and posterior contractile vacuoles 
Explanation.
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No official Explanation yet!


Correct Option:
B
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Question 3 Biology | WAEC/GCE (2017)
A
Chlamydomonas 
B
Amoeba 
C
Paramecium 
D
Plasmodium 
Explanation.
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The plasmodium is a single-celled parasite that multiplies in red blood cells of humans as well as in the mosquito intestine. Hence, it doesn't live freely.


Correct Option:
D
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Question 4 Biology | WAEC/GCE (2017)
A
Lysosome 
B
Nucleus 
C
Mitochondrion 
D
Ribosome 
Explanation.
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The production of ATP happens in the mitochondrion, which likewise exists in both animals and plants.


Correct Option:
C
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Question 5 Biology | WAEC/GCE (2017)
A
movement of water through the xylem 
B
loss of water vapour from the stomata 
C
translocation of food through the phloem 
D
absorption of water from the soil by the root 
Explanation.
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Osmosis is responsible for the ability of plant roots to draw water from the soil. Plants concentrate solutes in their root cells by active transport, and water enters the roots by osmosis.


Correct Option:
D
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Question 6 Biology | WAEC/GCE (2017)
A
Chlamydomonas 
B
Eudorina 
C
Euglena 
D
Spirogyra 
Explanation.
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Euglena use their chloroplasts to produce nutrients through photosynthesis. It is a dual organism as it can act both as an autotroph, making its own food, and heterotroph, feeding on other substances.


Correct Option:
C
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Question 7 Biology | WAEC/GCE (2017)
A
upper arm 
B
lower arm 
C
upper leg 
D
lower leg 
Explanation.
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The diagram shows the lower arm which can be seen between the elbow and the wrist.


Correct Option:
B
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Question 8 Biology | WAEC/GCE (2017)
A
B
II 
C
III 
D
IV 
Explanation.
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The part II is attached to the humerus. It forms a hinge joint to make up the hand.


Correct Option:
B
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Question 9 Biology | WAEC/GCE (2017)
A
B
II 
C
III 
D
IV 
Explanation.
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The triceps is a large muscle on the back of the upper limb of many vertebrates. The part III is a part of the bone that forms the triceps.


Correct Option:
C
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Question 10 Biology | WAEC/GCE (2017)
A
dicotyledonous root 
B
monocotyledonous root 
C
dicotyledonous stem 
D
monocotyledonous stem 
Explanation.
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The diagram shows the transverse section of a dicotyledonous stem showing its tissue distribution.


Correct Option:
C
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