Tuesday 8 November 2016

Neco Gce 2016/2017 Biology Paper I (Alternative to Practical) Answers – Nov/Dec Expo

1a)
A- is butterfly
B- is mosquito
C- is cockroach
D- is grashopper
1aii)
insecta
1bi)
tabulate
A
-complete metamorphism
-sucking mouth part
-sucking
B
-complete metamorphism
-piercing mouth
-piecing and sucking
C
-incomplete metamorphism
-chewing mouth part
bitting and chewing
D
-complete metamorphism
-chewing mouth part
-bitting and chewing
1bii)
i)they all have wings
ii)they all have walking legs
iii)they all have antenna
iv)they all have external eyes
v)they all have segimented body
1biii)
A-they help pollination
B-it is a transmitting organism for malarial
C-they reduce the quantity of food substance
D-they serve as source of food
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2 a )
i ) mushroom
ii ) thallophyta ( fungus )
iii ) I – pileus II – gills III – hyphae
iv ) it give support
v ) it absorb nutrient from soil
vi ) source of food
vii ) source of minerals
2 bi )
micro scope
2 bii )
– eye piece
– objective lens
– handle
– stage
– mirror
– base
2 biii )
i ) bacteria
ii ) virus
iii ) spirogyra
2 biv )
i ) keep in cooldryplace
ii ) keep away from dust
2 bv )
i ) oil the metallic part
ii ) repair the faulty part
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3 ai )
J – transverse section of an image
K – Longitudinal section of a coconut
L – A tridax fruit
M- A flamboyant fruit
3 aii )
J – berry
K – drupe
L – cypsela
M- legume
3 aiii )
i ) endocarp
ii ) seed
iii ) mesocarp
iv ) endocarp
v ) filoplume
vi ) seed
3 bi )
J – animal
K – water
L – wind
M- explosive machanism
3 bii )
endocarp of J is suculent and edible while endocarp of K is fibrous and inedible
3 biii )
J – Axile placentation
M- marginal placentaion
3 biv )
K – hypogeal germination
M- epigeal germination
3ai) J- transverse section of an image
K- Longitudinal section of a coconut
L- A tridax fruit
M-A flamboyant fruit
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