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Neco 2018 Biology Theory & Objective Answers

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Neco 2018 Biology Theory & Objective Answers by : 12:00 am On November 19, 2017

Neco 2018 Biology Theory & Objective Answers

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Biology OBJ:
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NOTE: YOU ARE TO ANSWER JUST THREE(3) - COMPLETED - GOOD LUCK
1ai)
i)Plants need sunlight for the process of photosynthesis.
ii)Plants use chlorophyll and light to make food.
1b)
i)Humerus
ii)Radius
iii)Ulna
iv)he ball and socket shoulder joint
v) Scapula
1c)
I)they perform the defence duty
ii)they under go the most labour within
iii)worker are tasked with the digestion of cellulose in food
1d)
An ecosystem includes all of the living things (plants, animals and organisms)
in a given area, interacting with each other, and also with their non-living
environments (weather, earth, sun, soil, climate, atmosphere).
1e)
CLICK HERE FOR THE DIAGRAM
3ai)
i)Liver cancer
ii)Hepatitis
iii)Cirrhosis
3aii)
-Plant cell-
i)presence of cell wall
ii)presence of chloroplast
iii)Presence of sparse cytoplasm
iv)presence of small vacuole
v)Absence of centrosome
-Animal cell-
i)Absence of cell wall
ii)Absence of chloroplasts
iii)Presence of dense cytoplasm
iv)Presence of small vacuole
v)Presence of Center some
3b)
CLICK HERE FOR THE DIAGRAM
3ci)
i)Parenchyma
ii)Collenchyma
iii)Wood(Xlem)
3cii)
i)They are able to regulate their inner body temperature to the temperature of
the
environment.
ii)They have scaly skins but absence of hair or fur.
4ai)
diffusion is defined as the process by which molecules or ion move from a
region of high concentrations to a region of low concentration until they are
evenly distributed
4aii)
osmosis is defined as the process by which water molecules move from a
region of dilute or wicker solution to stronger solution through a selectively or
permeable membrane
4aiii)
plasmolysis is defined as the outward movement or flow of water from a living
cell when they are place in an hyoertonic solution
4bi)
i)lack of sleep
ii)lack of privacy
iii)poor hygiene
iv)lost if physical contact
4bii)
I)prevention of pollution to prevent the destruction of aquatic life
ii)prohibition of killing or poaching of animals in game reserve
4biii)
I)dog
ii)horse
4ci)
Metamorphosis is a biological process by which an animal physically develops
after birth or hatching, involving a conspicuous and relatively abrupt change in
the animal's body structure through cell growth and differentiation.
4cii)
i)cockroaches
ii)termites
4ciii)
i)Tomatoes
ii)Oranges
2ai)
gene is a sequence of DNA or RNA which codes for a molecule that has a
function. During gene expression, the DNA is first copied into RNA.
2aii)
Implantation: The act of setting in firmly. In embryology, implantation refers
specifically to the attachment of the fertilized egg to the uterine lining, which
occurs approximately 6 or 7 days after conception (fertilization).
2aiii)
group of living organisms consisting of similar individuals capable of
exchanging genes or interbreeding. The species is the principal natural
taxonomic unit, ranking below a genus and denoted by a Latin binomial, e.g.
Homo sapiens.
2aiv)
A saprophyte or saprotroph is an organism which gets its energy from dead
and decaying organic matter.
2bi)
i)It gives support and shape to the body
ii) It helps in the production of white blood cells
iii) It aids free movements
iv) It helps in the attachment of muscles
2bii)
i)Biceps
ii)Triceps
2biii)
i)Lipase
ii)Maltase
iii)Amylase
FUNCTION:
-Lipase breaks down dietary fats into smaller molecules called fatty acids and
glycerol.
-Maltase converts maltose to glucose
-Amylase converts starch to maltose
++COMPLETED++fg

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