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NECO 2017 BIOLOGY Practical Expo (June/July) Answers

National Examinations Council, NECO 2017 BIOLOGY PRACTICAL EXPO Answers For June/July Examinations Now Available via Examscampus.net.

neco 2017 biology practical expo answers

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Biology Practical Answers Below

*2017 VERIFIED BIOLOGY PRACTICAL ANSWERS*

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

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

2ii)
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

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

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

2v)
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-samara

2bii)
SPECIMEN I
i)multi seeded
ii) Endocarp is juicy
iii) Mesocarp is juicy
iv)several carpels are founded
v)several ovaries
SPECIMEN J
i) one seeded
ii)Endocarp is hard
iii) Mesocarp may be fleshy or fibrous
iv) monocarpels
v) superior ovary

2biii)
K===>dispersal by explosive mechanism
L===>disposal of wind

=====================================
3i)
M-Adult butterfly
N-prawn
O-earthworm
P-tapeworm
3ii)
M-the class to which it belongs is INSECTA
3iii)
OBSERVATION Feature of M:
i)A pair of clubbed antenae
ii)A head,thorax and abdomen
iii)wings.

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

3v)
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

3bii)
O===>the phylum it belong is Annelida
P==>the phylum it belong is Platyhelminthes

3biii)
i)They help to loosen the top soil
ii)their faeces serve as manure to soil.

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National Examinations Council, NECO 2017 BIOLOGY PRACTICAL EXPO Answers For June/July Examinations Now Available via www.examscampus.net.ng,.

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