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Neco Biology Obj & Essay Answers 2018 (NECO BIOLOGY EXPO)

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Neco Biology Expo Obj & Essay 2018

Biology Neco Expo 2018

Neco Biology Theory 2018

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Answers for Biology Obj & Theory, Essay – NECO

Answers are currently not available.

Bio OBJ:
1-10 BBEADBEEEC
11-20 DADBDCDDDB
21-30 ADECBDADEC
31-40 DADAAAACBA
41-50 BCEABCECDD
51-60 EABBDDCCBB

1a)
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.the ball and socket shoulder joint
v. Scapula

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).

2ai
a 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
a 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.

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2aiv
A saprophyte or saprotroph is an organism which gets its energy from dead and decaying organic matter. This may be decaying pieces of plants or animals.

(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

3ai)
i) Liver fibrosis

ii) hepatitis

iii)hemochromatosis

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

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(3b) DRAW THE DIAGRAM

(3ci)
(i) Parenchyma
(ii) Collenchyma

(3cii)
(i) it ensure fertilization takes place intenolsy
(ii) the released the eggs and despite on the egg as they move down the widuct

(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) 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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