FREE CHOCKS!!! : WAEC 2015 BIOLOGY PRACTICAL ANSWERS AVAILABLE HERE




Thursday, 30th April, 2015:
Biology 3(Practical) (Alt. A) ———- 9.30am – 11.30am
Biology 3(Practical) (Alt. A) ———- 12.00pm – 2.00pm

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 ANSWERS NOW LOADED..........................




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BIOLOGY ANSWERS
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(1a)
Division;-Magnoliophyta
Class;-Magnoliopsida
(1b)
(i)
A-Spiral
B-Opposite
(ii)
A-swordlike
B-Oval/Oblong
(1c)
(i) A-smoooth
(ii)A-alternate venation
B-Net venation
(1d)
(i)
-They both have Narrow leaf
-They both have Green colouration of leaf
-They are both angiosperm
They are both dicotyledinous plant
(ii)
-Specimen A contains many leaves whie specimen B contains fewer leaves
-Specimen A is darker in colour while specimen B is lighter in colour
-Specimen A posses hard stem while specimen B posses succulent stem
-Specimen A has scaly appearance while specimen B does not have scaly appearance
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No 2
Ai
G-Arthoropoda
H-Arthropoda
ii
1-possession of exoskeleton of chtin.
2-possession of joint appendages.
B
G-Mandible.
H-Mandible
Ci
G-Arboreal
H-Termitarium
Ii.
G
1.Worker bee is a source of formic
acid.
2.It a source of income
H
1.it increase the nutient of the soil.
2.It destroys farm produce.
D
i M-Aves
N-pisces
P-vertebrata
ii. Protein of the organism
I
ii. M
I.Absense of sweet pore
2.Presence of barbs
3.Presence of Rachis
4.Presence of shaft
P
1.Presence of sweet pore.
2.Absence of barbs
3.Absence of rachis
4.Absence of shaft.
E
1.inferid umbilicus attaches the
specimen the skin of the bird.
2.Rachis hold the barbs in place.
3.The barbs insulate the body.
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(3a) specimen c= Tilapia fish specimen d= Toad
(3b) Aquatic habitat
(3c) specimen c is pisces specimen d is amphibians
(3di) tabulate specimen c
i. they have simple eye
ii. they have fins for movement in water specimen
d i. they have bugly eye
ii. they have two pairs of limbs
(3dii) 1. they have two- chambered heart
2. they have gills for gaseous exchange


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(4ai.)
Specimen L ——- Terrestrial habitat
Specimen M —— Terrestrial habitat
Specimen N ——-Terrestrial habitat
II.
Specimen L ——— Photosynthesis/
autotrophic.
Specimen M ——– Biting and
chewing /
heterotrophic
Specimen N ——–Saprophytic
iii. Specimen L —– They are green
plants
therefore they are able to produce
their own
food through photosynthesis.
Specimen M —– They have maxilla
and
mandibles that are adapted to bite
and chew
grasses.
(4bi.) They all lives in the same
habitat and
they depend on each other to
survive.
Freshly uprooted grass —–
grasshopper——–Mushroom
(ii.) sources of food for man.
reduction of crop yields.
(iii.) Using of insecticides.


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