Nabteb 2016 EXPO: Verified Biology practical Questions And Answers

Wednesday 4th May 2016
Biology paper II practical 9:00am-11:00am

NABTEB BIOLOGY PRACTICAL ANSWER
Nabteb Biology pract answers
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1i)
it essential for photosynthesis because it aids chlorophyll formation
1ii)
it is nucleus
1iii)
adenosine triphosphate(ATP)
1iv)
it aid exchange of gas and excretion in plant
1v)
hepatic artery
1vi)
a)water
b)latex
c)oxygen
d)oils and rasins
1vii)
-it aids osmoregulation
-it also helps in excretions
1viii)
-elephant tree
-gactus tree
1ix)
-they are protaineous in nature
-they accelerate the reate of chemical reaction
1x)
the process is homeostasis
1xi)
-nose
-eye
-ear
-skin
1xii)
X and Y chromosomes (sex chromosomes)
1xiii)
the calyx
1xiv)
-yellow fever
-chinken pox
1xv)
-through the water we drink
-through the food we eat
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2a)
specimen A is ground nut plant
specimen B is maize plant
2b)
A -net venation
B -parallel venation
2c)
A -epipeal permination
B -hypogeal permination
2d)
the reaming residue of cowpen or ground nut plant improve the organic matter of the soil when it decay
2e)
A -fat and oil
B -carbonhydrate
2f)
TABULATE
SPECIMENS A
i)possession of rough vein
ii)the leaf has parallel vein
iii)the surface of the leave is rough
iv)the veins are scattered
SPECIMENS B
i)possession of smooth vein
ii)the leaf has net vein
iii)the surface of the leaf is smooth
iv)the veins are well arranged.
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3a)
Specimens C is scapula of small mammal
3b)
it is found around the shoulder in animal
3c)
it aids the attachment of the muscles and ligaments that provide firm support for the fore limbs
3d)
i)their boches are covered with hairs
ii)they have two pairs of limbs
iii)they are homoiothemic or warm blooded animal in nature
iv)they have a well developed brain
3e)
DRAWING
8 TO 10CM LONG
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4a)
specimen D is tilapia fish
specimen E is toad
4bi)
D -fresh water
E -water or land
4bii)
D -fishes
E -amphibian
4c)
TABULATE
SPECIMENS D
i)fins present
ii)limb absent
iii)tail present
iv)scales present
SPECIMENS E
i)fins absent
ii)limbs present
iii)tail absent
iv)scales absent
4e)
DRAWING 8 TO 10CM LONG
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5a)
TABULATE
ECOLOGICAL FACTOR
i)amount of rain fall
ii)wind speed
iii)temperature
iv)tubidity
v)atmospheric pressure
INSTRUMENT USED
i)rain guage
ii)anenometre
iii)thermometer
iv)sacchi disc
v)barometer
5bi)
zooplankton——>cray fish——>tilapia——>king fishers
5bii)
i)producer ——> zooplankton
ii)tetiary consumer ——> kingfishers