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BIOLOGY PRATICAL NECO GCE 2015 FREE EXPO ANSWERS




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Monday 2nd Nov. 2015
BIOLOGY PRATICAL
2.00PM-4PM
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(1 a )
(i)Thoracic vertebra(anterior view )

(ii )
A- Neural spine
B - Neural arch
C - Centrum
D- Transverse process

(iii )
- The thoracic vertebra has a long and prominent neural spine which projects upwards and backward
- There is a large neural canal and neural arch

(iv )Twelve

(v )It can be found in chest region

(vi )Spinal cord

(vii)
A- It is used for the attachment of muscles
B - For the passage of the spinal cord
C - It support the neural
D- For the attachment of muscles and ligament

(1 b )
(i)
2 - Opening of stomata
3 - Closing of stomata

(ii )
I - Guard cell
II- Stoma
III - Epidermal cell
IV- Chloroplast
V - Spongy mesophyll

(iii )
I - It controls opening and closing of stomata
II- It allows gases in and out


(2 ai)
To demostrate transpiration through leaves

(2 aii )
A- Drop of water
B - leaf of young plant
C - Bell jars
D- polythene

(2 aiii ) B - for absorption of solar energy from the
sun
D- to prevent evaporation from the soil

(2 aiv )
+white anhydrous copper ii sulphate
(vi )
+serves as control experiment

(2 b )
(i)mitosis
(ii )23 daughter cells

(2 biii)
plant - root tip
Animal - sematic cell

(2 biv)
(i)it gives exact copy of the cell
(ii )it takes place in the growth of the
organism

(2 ci)
Tabulate : Res : A, B , AB , O
A:yes , No , no , no
B :no , yes , yes , no
AB :no , no , yes, no
O: yes, yes, yes , yes , yes

(2 cii ) Group
Group AB




(3 a )
(i) Pyramid of Numbers

(ii )
A = Producers
B = Primary consumers
C = Secondary consumers
D = Tertiary Consumers

(iii )
Grass > Grasshopper > Lizard > Hawk

(3 bi )
B = The numbers of organism in B will
decrease

D = These will increase in the number of
food in D.

(3 bii ) The trophic level that is mostly affected
in drought is A.

(3 biii)
Because the rate of water absorption will
decrease while the rate of transpiration
will increase .



(3 ci)
Life cycle of a Termite

(3 cii )
Incomplete metamorphosis

(3 ciii )
13 - Egg
14 - Nymph
18 - Reproductive stage

(3 civ )
14 - Worker
15 - soldier
16 - Soldier
17 - Reproductive
18 - Reproductive

(3 cv )
15 - It builds the nest
16 - It defends the colony
17 - It gives rise to new individuals


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