NECO 2017 Biology Practical Expo Answer - June/July

NECO 2017 Biology Practical Expo Answer - June/July Lawrence Victor 5 of 5

NECO Biology practical Questions and Answer Solution - May/June 2017 Expo Runz 1ai) A=Toad B=Thoracic Vertebra  C=Lumbar vertebra  D= Pride ...

NECO Biology practical Questions and Answer Solution - May/June 2017 Expo Runz

1ai)
A=Toad
B=Thoracic Vertebra 
C=Lumbar vertebra 
D= Pride of Barbados 
E=Millipede 
F=Agama Lizard

1aii)
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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

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

1av)
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

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) 
Specimen - 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

2bii) Tabulate I and J

specimen-I
i)multi-seeded
ii)endocarp is juicy
iii)mesocarp is juicy
iv)several carpel are founded
v)several ovaries

specimen-J
i)one seeded
ii)endocarp is hard
iii)monocarp may be fleshy or fibirous
iv)monocarpel
v)superior ovary

specimen-I	specimen-J
i)multi-seeded ii)endocarp is juicy iii)mesocarp is juicy iv)several carpel are founded v)several ovaries	i)one seeded ii)endocarp is hard iii)monocarp may be fleshy or fibirous iv)monocarpel v)superior ovary

2biii)
K-dispersal by explosive mechanism
L-dispersal by wind

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

3aii)
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.

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)
Observable features of specimens P
i)scolex
ii)neck
iii)proglottids

3bii)
Tabulate
-Features-
i)scolex
ii)neck
iii)proglottids

-functions-
i)It has hooks/suckers to help it hold on to the host's tissues
ii)holds and supports the scolex
iii)bears the testes and ovaries for reproduction

-Features-	-functions-
i)scolex ii)neck iii)proglottids	i)It has hooks/suckers to help it hold on to the host's tissues ii)holds and supports the scolex iii)bears the testes and ovaries for reproduction

3biii)
O-the phylum it belongs to annelida 
P-the phylum it belongs to platyhelminthes

3biv)
i)they help to loosen the top soil
ii)their faces serve as manure to the soil
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