The NABTEB GCE Nov/Dec 2017 Biology practical Questions and Answer solution with verified Expo now available
*NO:1 SOLUTION*
*1a)*
i)Stamen( Filament, anther)
ii)pistil(stigma, style, ovary)
*1b)*
i)Chickenpox
ii)Human immunodeficiency virus (HIV/AIDS)
*1c)*
i)Formation of strict law/punishment for illegal removal of plants and bush burning
ii)Discouragement of deforestation
*1d)*
i)Blood helps to trasport materials,in the body including nutrients, water,salts and waste products.
ii)Blood helps in body defences against disease, neutrophils and
monocytes engulf and destroy invading microorganisms e.g. bacteria.
*1e)*
i)Protozoa(Chlamydomonas)
ii)Bacteria(Cyanobacteria=blue-green algae)
*1f)*
Ecosystem
*1g)*
i)Discouragement of deforestation and planting of Canopy trees
ii)prevention of overgrazing
*1h)*
i) it aid reduction of soil fertility
ii)it reduces/ kill the living organisms of a soil surface
*1i)*
i) it leads to low production of crops
ii)Affect the availability of nitrogen to improve chlorophyll function.
*1j)*
i)By Construction of structure
ii)By using wool as fuel
*1k)*
i) Both affect respiration of organism when released to environment and microorganisms are voided in dust
ii)Smoke contain some green house gases which deplete the ozone layer
*1l)*
i)Hinge joint
ii)Hinge joint
*1m)*
i)Ability to collect and store water
ii)Features that reduce water loss
*1n)*
Mendel’s first law of inheritance states that, ‘ the alleles of a given locus segregate into separate gametes.’
*OR*
Mendel’s first law state that character of individual are situated in the gene which can be transfer from one generation to another
*1o)*
Kwashiokor (characterized by swollen stomach, ribs become prominent, yellow eye balls etc)
_______________________________
*SECTION B SOLUTION*
*NO2 SOLUTION*
*2ai)*
i=Butterfly net
ii=light meter/photo meter
iii=Rain Guage
iv=Wind Vane
v=Baermann Funnel
vi=Hygrometer
vii=Anemometer
*2aii)*
i) Amount of rainfall
ii) Direction of wind
iii)Wind speed
*2bi)*
a) Handle
b) Net
c) Funnel
d) Glass cylinder
e)Measuring cylinder
f)Arrow
g)Net or mash
h)measuring scale
*2bii)*
Ensured the Funnel is fixed to the measuring cylinder to enhance accurate reading of water volume
_____________________________
*NO:3 SOLUTION*
*3a)*
Euglena
*3aii)*
1)Flagellum
2)pigment spot(stigma)
3)paramylum granule
4) pellicle
5)Nucleus
6)food vacuole
7)Contractile Vacuole
8)Eye spot
*3bi)*
-Holozoic
*3bii)*
Flagellum (part I)
*3bii)*
i)It is used for detecting light
ii)it is used for storage of starch
iii)it is used for food storage
*3biv)*
PLANTS CHARACTERISTICS OF EUGLENA:-
*(Pick only two)*
i) It has chlorophyll for photosynthesis
i)It uses holophytic mode of nutrition if light is present.
iii)Possession of pyrenoid.
ANIMALS CHARACTERISTICS OF EUGLENA:-
*(pick only two)*
i)Possession of an eye part for light deflection.
ii)Possession of pellicle.
iii)Possession of a gullet and a food reservoirs
____________________________
*NO:4 SOLUTION*
*4a)*
ix)Cashew fruit
x)Mango fruit
xi)Okra
xii)Pride of Barbados pod
xiii)Tomatoes
*4aii)*
a=stalk
b=swollen freshy receptacle
c=Nut
d=seed coat
e=Endocarp
f=Epicarp
g=Mesocarp
h=Epicarp
i=seed
j=Mesocarp
*4bi)*
ix)False fruit, indehiscent
x)True fruit, simple fruit, succulent
xii)simple true dry dehiscent
*4bii)*
x)-Animal Dispersal
xi)-Wind Dispersal
______________________________
*5a)*
xiv)-Axis Vertebra
xv) – Thoracic Vertebra
xvi) – Lumber Vertebra
*5aii)*
1=Neural Spine
2= posterior Articular Surface
3=Centrum
4=Neural spine
5=Transverse process
6=Centrum
7=Neural spine
8=Neural Arch
9=Neural canal
10=Transverse process
*5bi)*
1 Xiv) it allow the head to be turned easily ie Twisting of the head
2 Xv) it aid the attachment of the ribs
3 xv) It assists in breathing along side with the ribs
4 Xvi) They bear Considerable weight of the body
*5bii)*
Xiv)it is found in the neck region
Xv)it is found in the chest region
Xvi)It is found in the upper abdominal region
*5c)*
Differentiate XIV AND XVI
*(XIV)-Axis*
i) Absence of centrum
ii) it has no vertebral body
iii)Absence of Transverse process
*(XVI)-Lumber*
i)presents of Centrum
ii) it has Vertebral body
iii)Possession of Transverse process
COMPLETED
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