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NECO 2017 - BIOLOGY PRACTICAL SOLUTION ANSWERS

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NECO - BIOLOGY PRACTICAL ANSWERS

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Exam Time: Tuesday 13th June 2017
Practical: Biology – 10am – 12pm
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(1i)
A-Toad
B-Thoracic vertebra
C-Lumbar vertebra
D-Pride of barbados
E-Millipede
F-Agama lizard

(1ii)
DRAW THE DIAGRAM

(1iii)
B-Located in the chest,attached to the ribs
C-Located in the loin

(1iv)
TABULATE
Specimen B| Specimen C
-They are 12 in numbers|They are only 5
-They are large|They are the largest
-They are rigid|They are flexible
-Less massive|More massive
-Less vulnerable to generative condition|More vulnerable to generative condition

(1v)
-Both have large centrum
-Both have neural spine
-Both support the body and protect the spinal cord

(1vi)
A-Class amphibian
F-Class reptilia

(1vii)
External part of sp D-Stamen
Non essential part-Petals and sepals

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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) 
-they both have claws
-they both have three toes in front and one at the back
-they are both used for walking

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

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

(2av)
-prominent hind limb for running away from treats
-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
Specimen I | Specimen J
-multi-seeded|one seeded
-endocarp is juicy|endocarp is hard
-mesocarp is juicy|mesocarp is hard
-several carpel are founded|monocarpel
-several ovaries|superior ovary

(2biii)
K-Dispersal is by explosive mechanism
L-Dispersal is 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

(3aiii)
OBSERVATION Feature of M:
-A pair of clubbed antenae
-A head,thorax and abdomen
-wings

(3aiv) 
OBSERVABLE feature of N:
-antenea
-pincer
-abdomen
-swimmerets
-walking legs

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

(3b)
Observeable features of P:
-Scolex
-Neck
-Proglottis

(3bii)
-Scolex: It bears the hooks and suckers with which the worm uses to cling to wall of the host
-Neck: Holds and support the scolex
-Proglottis: Bears the testes and ovaries for reproduction

(3biii)
O-Annelida
P-platyhelminthes

(3biv)
-They help to loosen the top soil
-Their feaces serves a manure to the soil












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