NECO 2018 BIOLOGY OBJ AND THEORY

BIOLOGY OBJ:
1-10: BBEADBEEEC
11-20: DADBDCDDDB
21-30: ADECBDADEC
31-40: DADAAAACBA
41-50: BCEABCCCDB
51-60: EABBDDCCBB
(2ai)
Gene can be defined as the basic unit of
iheritance which carries hereditary
factors or materials such DNA. It is found
in the chromosone of all cells
(2aii)
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.
(2aiv)
A saprophytes are organism which feeds
on dead decayed 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
(3a)
(i) Diabetes modditues
(ii) Gell stone
(iii) infectivwiducttitis
(iv) cancer of the Liver
(3aii)
TABULATE:
Under 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
Under Animal cell
(i) Absence of cell wall
(ii) Absence of chloroplasts
(iii) Presence of dense cytoplasm
(iv) Presence of small vacuole
(v) Presence of Centrosome
(3b) DRAW THE DIAGRAM
(3ci)
(i) Parenchyma
(ii) Collenchyma
(3cii)
(i) it ensure fertilization takes place
ingenious
(ii) the released the eggs and despite on
the egg as they move down the widuct
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
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
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) effect of over crowding are ;
Aggressive behavior
State of unrest
Decrease in reproductive ability
4bii) conservation of wild life are;
Indiscriminate killing of wildlife should be
discouraged
Deforestation which destroy the habitat of
animal should be discouraged
Killing of young developing animals
should be allow

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