NECO 2018 Biology theory & obj answers

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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

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(3a)
(i) Diabetes mellitus
(ii) Infective hepatitis
(iii) 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) A reptile has a backbone, which means they are vertebrates.
(ii) Reptiles produce eggs. Most reptiles lay hard-shelled eggs, but a few give birth to live young.
(iii) Reptiles are cold-blooded

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