NECO 2016/2017 biology Practical Specimen Answers – June/July

NECO 2016/2017 biology Practical Specimen Answers – June/July

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SPECIMENS
A-termite
B-bee
C-cricket
D-pride of Barbados(dry pod)
E-orange fruit
F-guava fruit
G-spider
H-tilapia fish(fresh/freshly preserved)
I-african giant snail
J-irish potato(tuber)
K-sweet potato(tuber)
L-yam (tuber)
M-egg (albumen raw)
N-glucose monohydrate(1g)
O-benedict solution(2%)
P-potassium permanganet crystal (1g)
Q-millon’s reagent
R-skull small mammal
S-scapula bone
T-water

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SOLUTION
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1a)
A-termite
B-bee
C-cricket
D-pride of barbados(dry pod)
E-orange fruit F-guava fruit

1aii)
insecta

1aiii)
i)It possesses three pairs or walking legs
ii)possession of three body division

1aiv)
SpecimenA
i)it speeds up decaying process by breaking down of dead trees to form humus which increase soil fertility
ii)it is source of proteins

speciemensB
i)it is use for pollination of flowers
ii)it is important for production of live honey bee

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2a)
G-spider
H-tilapia fish(fresh/freshly preserved)
I-african giant snail
J-irish potato(tuber)
K-sweet potato(tuber) L-yam (tuber)

(2aii)
G-Annelida
H-Pisces
I-Crustacea

(2aiii)
J-Stem tuber
K-root tuber
L-Root tuber

(2bi)
H-Aquatic
I-Terrestial

(2bii)
Specimen I:
-It has shell
-It has muscular foot
-It has radula

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3ai)
- A pink colouration is observed
- Peotein is present
- A brick red precipitate is formed
- Carbonhydrate is present

3aii)
- It builds body tissues and cells
- it prevent body against infections
- It gives energy to the body
- It gives the body ability to maintain temperature
- It allows for blood production

3aiii )
Polypeptides

3b)
- A pink colouration is formed
- Hydrolysis
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