NECO 2018 BIOLOGY OBJ AND ESSAY ANSWER NOW AVAILABLE…

NECO 2018 BiOLOGY ANSWER LOADING,….

BIOLOGY OBJ:
1-10: BBEADBEEEC
11-20: DADBDCDDDB
21-30: ADECBDADEC
31-40: DADAAAACBA
41-50: BCEABCCCDB
51-60: EABBDDCCBB
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1a)
I) Sunlight:- convert Co2 and water into carbohydrates when absorbed by chlorophyll
ii) Chlorophyll:- Traps, absorbs and capture light energy

b)
I) Humerus
ii) Radius
iii) Ulna
iv) Carpals
v) metacarpals

1c)
I) make tunnels in the soil, build and repair termite nest
ii) take care of the eggs and young termites
iii) collect food, feed the young termites as well as the king, queen and the soldiers.

1d)
An ecosystem is a community of living things in an environment, together with the non living part of the environment

1e) Diagram

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(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

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3ai)
Diabetes mellitus
Gall stone
Cancer of the liver
Infective hepatitis

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 Centrosome

3b) diagram

3ci) type of supporting tissue in plant;
Parenchyma
Collenchyma

3cii)give two characteristics of reptile;
They are poikilothermic animals
They have dry skin covered with scales
They do not show parental care
They have lungs which are used for gaseous exchange
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(4ai)
Diffusion is the movement of (molecules atoms ions) from a region in which they are in higher concentration until an equilibrium is established
(4ai)
Osmosis this is a spontaneous movement of water molecules through a semi-permeable membrane into a region of higher solute concentration
(4aii)
Plasmolysis this is a shrinking away of protoplam linear from a cell wall of a paintor bacterium due to water loss from osmosis

(4b)
(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

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