Neco 2017 Biology Practical Answers – June/July Expo

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2017 NECO BIOLOGY PRACTICAL ANSWERS FROM MAXIGLOBAL.COM.NG
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1ai)
A=Toad
B=Thoracic Vertebra 
C=Lumbar vertebra 
D= Pride of Barbados 
E=Millipede 
F=Agama Lizard 

1aii) 
DRAW literal view of Thoracic Vertebra (check image in pdf) 

1aiii)
B===>located in chest, attached to the ribs
C===>located in loin


1aiv)
Tabulate 
SPECIMEN B
i)They are 12 in number
ii) they are large
iii) They are rigid
iv)less vulnerable to degenerative conditions 
v) less massive

SPECIMEN C
i)They are only 5
ii)They are the largest 
iii)They are flexible 
iv) more vulnerable to degenerative conditions due to its weight - bearing function 
v) more massive

1v)
i) Both have large centrum 
ii)Both have neural spine 
iii) Both support the body and protect the spinal cord

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2ai) 
G- foot of domestic fowl
H-foot of domestic duck
I-tomatoe fruit
J-coconut fruit
K-dry bean pod
L-combretion fruit

2aii) 
i-they both have claws
ii-they both have three toes in front and one at the back
iii-they are both used for walking

2aiii) 
Spc- H is webbed while sec-G is not

2aiv)
i-for scratching
ii-for walking/running i.e locomotion

2av)
i-prominent hind limb for running away from treats
ii-prominent claws for scratching the ground in search of food


2bi)
I- simple sacculent fruit - berry
J-simple sacculent fruit - drupe
K-simple dry dehicent fruit- legume
L-simple dry dehiscent fruit 


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3ai)
M-Adult butterfly
N-prawn
O-earthworm
P-tapeworm

3aii)
M-the class to which it belongs is INSECTA

3aiii)
OBSERVATION Feature of M:
i)A pair of clubbed antenae
ii)A head,thorax and abdomen
iii)wings.

3aiv) 
OBSERVABLE feature of N:
i)antenea
ii)pincer
iii)abdomen
iv)swimmerets
v)walking legs

3av)
M- pollination of flowers
N-serve as food to man

3bi)
OBSERVATION FEATURES OF SPECIMEN P
i) scolex
ii)Neck
iii)proglottis

3bii)
Tabulate feature and function

*Feature*
i)Scolex 
*Function*
Scolex bear hooks and suckers with which the worm clings to the wall of the host's intestine

ii)
*Feature*
Neck 
*function*
Hold and supports the scolex

iii) 
*feature*
Proglottis 
*Function*
Bears the testes and ovaries for reproduction
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