NECO – BIOLOGY – PRACT – ANSWER

( 1 a )
A – Elephant Grass
B – Grasshopper
C – Lizard
D – Housefly

( 1 aii )
Specimen B – Insecta
Specimen C – Reptilia in the sub – phylum vertebrata .

( 1 aiii)
Specimen D
Houseflies serve as intermediate hosts for several parasitic worms Eg Round worms in their developmental stage .

( 1 aiv )
Specimen B :
( i ) Has fore and hind wing for flight .
( ii) Has cuticle to minimize loss of water.
( iii ) Has antenna for feeling .

Specimen C :
( i ) limbs are developed for movement on land .
( ii) dry scaly skin to protect it from drying up.
( iii ) its digits end in claws for grasping and climbing

( 1 av )
elephant grass – – – – – > grasshopper- – – – – > lizard

( 1 bi)
E – termites
F – Spiders
1 bii )

( 1 biii)
In a tabular form :
Under E
1 . Possession of six walking legs .
2 . Possession of three body segments.
3 . Possession of thorax .
4 . Absence of hairy body .

Under F :
1 . Possession of eight walking legs
2 . Possession of two body segments.
3 . Absence of thorax .
4 . Possession of hairy body .
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( 2 a )
G – Coconut fruits .
H – Cashew fruits .
I – Tomato fruits .
J – Tridax fruits .

( 2 aii )
In a tabular form :
G | Wind | The flowers do not produce scent
H | Animal | Some flowers have coloured calyx
I | Animal | The flowers do not produce nectar
J | wind | It possesses honey guide

( 2 aiii)
In a tabular form
Under G :
– It has a based and stony endocarp.
– It undergoes marginal placentation .
– Coconut Fruit is dry indehiscent
– It has hard epicarp.
Under I :
– It has scattered scent .
– It undergoes axile placentation .
– Tomato is a dry dehiscent .
– It has a fleshy epicarp.

( 2 b )

( 2 bii )
mammals
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( 3 ai)
Flamboyant flowers.
( 3 aii )
In a tabular form :
Under parts:
1 . Filament .
2 . Style .
3 . Petals.
4 . Sepal
Under Number :
1 . 5
2 . 1
3 . 5
4 . 5

( 3 aiii)
Filament – It is the male organ used in production .
Style – It is the female organ through which the gametes pass .
Petal – It produces sweet juices for the insects .

( 3 aiv )
Pollination .

( 3 av )
( i ) It has nectary gland .
( ii) The anthers contains few pollen grains .
( iii ) The stigma is lobbed with sticky surfaces for easy adherence of the pollen grain .

( 3 bi)
M – Tilapia fish .

( 3 bii )
Pisces .

( 3 biii)
– It is poikilothermic animal .
– It possess dorsal fin for swimming .
– The body is covered with overlapping scales.

3bvi)

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Completed .