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NECO 2017 Biology Practical Expo Answer – June/July

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



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



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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