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NABTEB GCE Biology Practical Expo Answer – Nov/Dec 2017

 

100% Correct NABTEB GCE Biology Solution
NABTEB GCE 2017 Nov/Dec Biology Practical Answer and Solution to the questions.

*2017 NABTEB BIOLOGY PRACTICAL*

*COMPLETE SECTION A SOLUTION*

*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

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