NECO-BIOLOGY-PRACTICALS-ANSWERS (1ai) Specimen; A is yam tuber Specimen; B is cassava tuber Specimen; C is quadrant Specimen; D is insect net Specimen; E is rain guage Specimen; F is rice grain Specimen; G is dry groundnuts seed
(1aii) Specimen; A is propagated from small tubers Specimen; B is propagated by stem Specimen; F is propagated by seeds
(1aiii) Specimen; C is used for for study of the distribution of an item over a large area. Specimen; D is used for prevention against insects Specimen; E is used to measure the precipitating rain
(1aiv) Diagram of insect net.
(1bi) (i)The surface of B turn blue-black (ii)starch is present
(1bii) Specimen; F grains (cereals) Specimen; G puises (legume)
(1biii) (i)The paper appears translucent (ii) Specimen; G contain fat and oil or fat and oil is present in specimen G
Table of Contents
Fat and oil
(2ai) Specimen; H is contour feather Specimen; I is quill feather Specimen; J is Filoplume Specimen; K is millipede Specimen; L is centipede
(2aii) (i)They provide insulation to birds (ii)Feathers allow for flight (iii)Feathers are used for defense (iv)Feathers are used for camouflage
(2aiii) (i)Wings (ii)Tail
(2bi) Diagram of specimen I.
(2bii) (i)Specimen; H serve as aerodynamic devices for flight (ii)Specimen; J are used principally as insulation, to conserve body heat.
(2biii) Specimen; K belong to the class Diplopoda Specimen; L belong to the class Chilopoda.
(2biv) In tabular form -Specimen; K- (i)millipedes are more rounded. (ii)Millipedes have two sets of legs per segment positioned directly under their body.
-Specimen; L- (i)centipedes have a flatter body
(ii)Centipedes have one set of legs per segment positioned on the side of their body.
(3ai) Specimen; M is Grasshopper Specimen; N is spider Specimen; O is Larva (house fly) Specimen; P is Larva ( mosquito) Specimen; Q Flame of The forest flower Specimen; R hibicuss flower
(3aii) (i)Specimen; M belongs to Insecta (ii)Specimen; N belongs to Arachnida
(3aiii) (i)Specimen; N has four pairs of legs (eight total). (ii)N has also have two additional pairs of appendages. (iii)Specimen; N do not have antennae or wings.
(3aiv) Specimen; O is Leftovers foods Specimen; P is stagnant water
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