BIOLOGY PRACTICAL SOLUTIONS BY EXPOROOM

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NOte we ar not doing
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tomorrow looking for
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(1ai)
Specimen A – Elephant
Grass.
Specimen B-
Grasshopper
Specimen C- Lizard.
Specimen D – Housefly.
(1aii)
Specimen B – Insecta
Specimen C – Reptilia in
the sub-phylum
vertebrata.
(1aiii)
Specimen D
Houseflies serve as
intermediate hosts for
several parasitic worms
Eg Round worms in their
developmental stage.
(1aiv)
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
(1av)
A (Elephant grass) -> B
(grasshopper) -> C
(Lizard)
(1bi)
Specimen E – Termite
Specimen F – Spider
(1bii)
Drawing
(1biii)
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.
2ai)
G – Coconut Fruit
H – Cashew Fruit
I – Tomato Fruit
J – Tridax Fruit
(2a)
G – Coconut fruits.
H – Cashew fruits.
I – Tomato fruits.
J – Tridax fruits.
(2aii)
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
(2aiii)
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.
(2b)
Diagram
(3ai)
Flamboyant flowers.
(3aii)
In a tabular form:
Under parts:
1. Filament.
2. Style.
3. Petals.
4. Sepal
Under Number:
1. 5
2. 1
3. 5
4. 5
(3aiii)
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.
(3aiv)
Pollination.
(3av)
(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.
(3bi)
M – Tilapia fish.
(3bii)
Pisces.
(3biii)
-It is poikilothermic
animal.
-It possess dorsal fin for
swimming.
-The body is covered
with overlapping scales.,

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