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Biology practical neco biology

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2017 VERIFIED BIOLOGY PRACTICAL ANSWERS
copied from www.bestarewa.com.ng
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 loincopied from www.bestarewa.com.ng


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 fowlcopied from www.bestarewa.com.ng

 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 copied from www.bestarewa.com.ng

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
copied from www.bestarewa.com.ng

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

=====================================
3i)
M-Adult butterflycopied from www.bestarewa.com.ng
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 abdomencopied from www.bestarewa.com.ng
 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 functioncopied from www.bestarewa.com.ng

*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 scolexcopied from www.bestarewa.com.ng

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

*COMPLETED*copied from www.bestarewa.com.ng

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